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<li class="toctree-l3"><a class="reference internal" href="loggrad.html">LogGrad</a></li>
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<li class="toctree-l3"><a class="reference internal" href="lstmgrad.html">LstmGrad</a></li>
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<li class="toctree-l3"><a class="reference internal" href="maxpoolgrad.html">MaxPoolGrad</a></li>
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<li class="toctree-l3"><a class="reference internal" href="random_normal.html">RandomNormal</a></li>
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<li class="toctree-l3"><a class="reference internal" href="random_standard_normal.html">RandomStandardNormal</a></li>
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<li class="toctree-l3"><a class="reference internal" href="reshape.html">Reshape</a></li>
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<li class="toctree-l3"><a class="reference internal" href="resize.html">Resize</a></li>
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<li class="toctree-l3 current"><a class="current reference internal" href="#">Resizegrad</a></li>
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<a href="../../_sources/functionlib/dsplib/resizegrad.rst.txt" rel="nofollow"> 查看页面源码</a>
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<section id="resizegrad">
|
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<h1>Resizegrad<a class="headerlink" href="#resizegrad" title="此标题的永久链接"></a></h1>
|
||
<p>计算 Resize 操作的梯度。该算子包含两种实现：最近邻插值梯度（ResizeNearestNeighborGrad）和双线性插值梯度（ResizeBiLinearGrad）。用于将上游梯度从输出尺寸反向传播到输入尺寸。</p>
|
||
<p>最近邻插值梯度（ResizeNearestNeighborGrad）</p>
|
||
<p>对于最近邻插值，输入梯度通过最近邻映射反向传播到输出梯度。</p>
|
||
<div class="math notranslate nohighlight">
|
||
\[\begin{split}out_y =
|
||
\begin{cases}
|
||
\mathrm{round}(in_y \cdot height\_scale), & \text{if } align\_corners \\
|
||
\lfloor in_y \cdot height\_scale \rfloor, & \text{otherwise}
|
||
\end{cases}\end{split}\]</div>
|
||
<div class="math notranslate nohighlight">
|
||
\[\begin{split}out_x =
|
||
\begin{cases}
|
||
\mathrm{round}(in_x \cdot width\_scale), & \text{if } align\_corners \\
|
||
\lfloor in_x \cdot width\_scale \rfloor, & \text{otherwise}
|
||
\end{cases}\end{split}\]</div>
|
||
<div class="math notranslate nohighlight">
|
||
\[out\_addr[out\_offset] \mathrel{+}= in\_addr[in\_offset]\]</div>
|
||
<p>其中 <cite>in_addr</cite> 是上游梯度（输出尺寸），<cite>out_addr</cite> 是输入梯度（输入尺寸）。注意使用累加操作（+=），因为多个输入位置可能映射到同一个输出位置。</p>
|
||
<p>双线性插值梯度（ResizeBiLinearGrad）</p>
|
||
<p>对于双线性插值，输入梯度通过双线性插值的反向传播分配到4个相邻的输出位置。</p>
|
||
<div class="math notranslate nohighlight">
|
||
\[in_y = h \cdot height\_scale\]</div>
|
||
<div class="math notranslate nohighlight">
|
||
\[top_y = \max(\lfloor in_y \rfloor, 0)\]</div>
|
||
<div class="math notranslate nohighlight">
|
||
\[bottom_y = \min(\lceil in_y \rceil, out\_height - 1)\]</div>
|
||
<div class="math notranslate nohighlight">
|
||
\[y_{\mathrm{lerp}} = in_y - \lfloor in_y \rfloor\]</div>
|
||
<div class="math notranslate nohighlight">
|
||
\[inverse\_y\_lerp = 1.0 - y_{\mathrm{lerp}}\]</div>
|
||
<p>对于 x 维度有类似的公式：</p>
|
||
<div class="math notranslate nohighlight">
|
||
\[in_x = w \cdot width\_scale\]</div>
|
||
<div class="math notranslate nohighlight">
|
||
\[left_x = \max(\lfloor in_x \rfloor, 0)\]</div>
|
||
<div class="math notranslate nohighlight">
|
||
\[right_x = \min(\lceil in_x \rceil, out\_width - 1)\]</div>
|
||
<div class="math notranslate nohighlight">
|
||
\[x_{\mathrm{lerp}} = in_x - \lfloor in_x \rfloor\]</div>
|
||
<div class="math notranslate nohighlight">
|
||
\[inverse\_x\_lerp = 1.0 - x_{\mathrm{lerp}}\]</div>
|
||
<p>输入梯度按权重分配到4个相邻位置：</p>
|
||
<div class="math notranslate nohighlight">
|
||
\[out\_addr[top_y, left_x] \mathrel{+}= in\_addr[h, w] \cdot
|
||
(inverse\_y\_lerp \cdot inverse\_x\_lerp)\]</div>
|
||
<div class="math notranslate nohighlight">
|
||
\[out\_addr[top_y, right_x] \mathrel{+}= in\_addr[h, w] \cdot
|
||
(inverse\_y\_lerp \cdot x_{\mathrm{lerp}})\]</div>
|
||
<div class="math notranslate nohighlight">
|
||
\[out\_addr[bottom_y, left_x] \mathrel{+}= in\_addr[h, w] \cdot
|
||
(y_{\mathrm{lerp}} \cdot inverse\_x\_lerp)\]</div>
|
||
<div class="math notranslate nohighlight">
|
||
\[out\_addr[bottom_y, right_x] \mathrel{+}= in\_addr[h, w] \cdot
|
||
(y_{\mathrm{lerp}} \cdot x_{\mathrm{lerp}})\]</div>
|
||
<dl class="simple">
|
||
<dt>输入：</dt><dd><ul class="simple">
|
||
<li><p><strong>in_addr</strong> - 指向上游梯度数据的指针（输出尺寸的梯度）。</p></li>
|
||
<li><p><strong>out_addr</strong> - 指向输出梯度数据的指针（输入尺寸的梯度），需要初始化为0。</p></li>
|
||
<li><p><strong>batch_size</strong> - 批次大小。</p></li>
|
||
<li><p><strong>channel</strong> - 通道数。</p></li>
|
||
<li><p><strong>format</strong> - 数据格式，0 表示 NHWC，1 表示 NCHW。</p></li>
|
||
<li><p><strong>align_corners</strong> - 是否对齐角点标志，0 表示不对齐，1 表示对齐。</p></li>
|
||
<li><p><strong>in_height</strong> - 输入高度。</p></li>
|
||
<li><p><strong>in_width</strong> - 输入宽度。</p></li>
|
||
<li><p><strong>out_height</strong> - 输出高度。</p></li>
|
||
<li><p><strong>out_width</strong> - 输出宽度。</p></li>
|
||
<li><p><strong>height_scale</strong> - 高度缩放因子，通常为 (out_height - 1) / (in_height - 1) 或 out_height / in_height。</p></li>
|
||
<li><p><strong>width_scale</strong> - 宽度缩放因子，通常为 (out_width - 1) / (in_width - 1) 或 out_width / in_width。</p></li>
|
||
</ul>
|
||
</dd>
|
||
<dt>输出：</dt><dd><ul class="simple">
|
||
<li><p><strong>out_addr</strong> - 计算后的输入梯度（输入尺寸的梯度）。</p></li>
|
||
</ul>
|
||
</dd>
|
||
<dt>支持平台：</dt><dd><p><code class="docutils literal notranslate"><span class="pre">FT78NE</span></code>
|
||
<code class="docutils literal notranslate"><span class="pre">MT7004</span></code></p>
|
||
</dd>
|
||
</dl>
|
||
<div class="admonition note">
|
||
<p class="admonition-title">备注</p>
|
||
<ul class="simple">
|
||
<li><p>FT78NE 支持 fp32</p></li>
|
||
<li><p>MT7004 支持 fp16, fp32</p></li>
|
||
</ul>
|
||
</div>
|
||
<p><strong>共享存储版本:</strong></p>
|
||
<dl class="c function">
|
||
<dt class="sig sig-object c" id="c.fp_resizenearestneighborgrad_s">
|
||
<span class="kt"><span class="pre">void</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">fp_resizenearestneighborgrad_s</span></span></span><span class="sig-paren">(</span><span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">in_addr</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">out_addr</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">batch_size</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">channel</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">format</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">align_corners</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">in_height</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">in_width</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">out_height</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">out_width</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="n"><span class="pre">height_scale</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="n"><span class="pre">width_scale</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">core_mask</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.fp_resizenearestneighborgrad_s" title="永久链接至目标"></a><br /></dt>
|
||
<dd></dd></dl>
|
||
|
||
<dl class="c function">
|
||
<dt class="sig sig-object c" id="c.hp_resizenearestneighborgrad_s">
|
||
<span class="kt"><span class="pre">void</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">hp_resizenearestneighborgrad_s</span></span></span><span class="sig-paren">(</span><span class="n"><span class="pre">half</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">in_addr</span></span>, <span class="n"><span class="pre">half</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">out_addr</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">batch_size</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">channel</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">format</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">align_corners</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">in_height</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">in_width</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">out_height</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">out_width</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="n"><span class="pre">height_scale</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="n"><span class="pre">width_scale</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">core_mask</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.hp_resizenearestneighborgrad_s" title="永久链接至目标"></a><br /></dt>
|
||
<dd></dd></dl>
|
||
|
||
<dl class="c function">
|
||
<dt class="sig sig-object c" id="c.fp_resizebilineargrad_s">
|
||
<span class="kt"><span class="pre">void</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">fp_resizebilineargrad_s</span></span></span><span class="sig-paren">(</span><span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">in_addr</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">out_addr</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">batch_size</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">channel</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">format</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">align_corners</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">in_height</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">in_width</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">out_height</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">out_width</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="n"><span class="pre">height_scale</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="n"><span class="pre">width_scale</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">core_mask</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.fp_resizebilineargrad_s" title="永久链接至目标"></a><br /></dt>
|
||
<dd></dd></dl>
|
||
|
||
<dl class="c function">
|
||
<dt class="sig sig-object c" id="c.hp_resizebilineargrad_s">
|
||
<span class="kt"><span class="pre">void</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">hp_resizebilineargrad_s</span></span></span><span class="sig-paren">(</span><span class="n"><span class="pre">half</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">in_addr</span></span>, <span class="n"><span class="pre">half</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">out_addr</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">batch_size</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">channel</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">format</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">align_corners</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">in_height</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">in_width</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">out_height</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">out_width</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="n"><span class="pre">height_scale</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="n"><span class="pre">width_scale</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">core_mask</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.hp_resizebilineargrad_s" title="永久链接至目标"></a><br /></dt>
|
||
<dd></dd></dl>
|
||
|
||
<p><strong>C调用示例（最近邻插值梯度）:</strong></p>
|
||
<div class="highlight-c notranslate"><div class="highlight"><pre><span></span><span class="linenos"> 1</span><span class="cp">#include</span><span class="w"> </span><span class="cpf"><stdio.h></span>
|
||
<span class="linenos"> 2</span><span class="cp">#include</span><span class="w"> </span><span class="cpf"><resizegrad.h></span>
|
||
<span class="linenos"> 3</span>
|
||
<span class="linenos"> 4</span><span class="kt">int</span><span class="w"> </span><span class="nf">main</span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">argc</span><span class="p">,</span><span class="w"> </span><span class="kt">char</span><span class="o">*</span><span class="w"> </span><span class="n">argv</span><span class="p">[])</span><span class="w"> </span><span class="p">{</span>
|
||
<span class="linenos"> 5</span><span class="w"> </span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="n">in_addr</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="p">)</span><span class="mh">0x10010000</span><span class="p">;</span>
|
||
<span class="linenos"> 6</span><span class="w"> </span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="n">out_addr</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="p">)</span><span class="mh">0x10020000</span><span class="p">;</span>
|
||
<span class="linenos"> 7</span>
|
||
<span class="linenos"> 8</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">batch_size</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">4</span><span class="p">;</span>
|
||
<span class="linenos"> 9</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">channel</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">3</span><span class="p">;</span>
|
||
<span class="linenos">10</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">format</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
|
||
<span class="linenos">11</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">align_corners</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
|
||
<span class="linenos">12</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">in_height</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">4</span><span class="p">,</span><span class="w"> </span><span class="n">in_width</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">4</span><span class="p">;</span>
|
||
<span class="linenos">13</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">out_height</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">6</span><span class="p">,</span><span class="w"> </span><span class="n">out_width</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">6</span><span class="p">;</span>
|
||
<span class="linenos">14</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">core_mask</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mh">0xff</span><span class="p">;</span>
|
||
<span class="linenos">15</span>
|
||
<span class="linenos">16</span><span class="w"> </span><span class="kt">float</span><span class="w"> </span><span class="n">height_scale</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">float</span><span class="p">)(</span><span class="n">out_height</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="mi">1</span><span class="p">)</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="p">(</span><span class="n">in_height</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="mi">1</span><span class="p">);</span>
|
||
<span class="linenos">17</span><span class="w"> </span><span class="kt">float</span><span class="w"> </span><span class="n">width_scale</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">float</span><span class="p">)(</span><span class="n">out_width</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="mi">1</span><span class="p">)</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="p">(</span><span class="n">in_width</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="mi">1</span><span class="p">);</span>
|
||
<span class="linenos">18</span>
|
||
<span class="linenos">19</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">output_size</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">in_height</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">in_width</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">channel</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">batch_size</span><span class="p">;</span>
|
||
<span class="linenos">20</span><span class="w"> </span><span class="n">memset</span><span class="p">(</span><span class="n">out_addr</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">output_size</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="k">sizeof</span><span class="p">(</span><span class="kt">float</span><span class="p">));</span>
|
||
<span class="linenos">21</span>
|
||
<span class="hll"><span class="linenos">22</span><span class="w"> </span><span class="n">fp_resizenearestneighborgrad_s</span><span class="p">(</span><span class="n">in_addr</span><span class="p">,</span><span class="w"> </span><span class="n">out_addr</span><span class="p">,</span><span class="w"> </span><span class="n">batch_size</span><span class="p">,</span><span class="w"> </span><span class="n">channel</span><span class="p">,</span>
|
||
</span><span class="hll"><span class="linenos">23</span><span class="w"> </span><span class="n">format</span><span class="p">,</span><span class="w"> </span><span class="n">align_corners</span><span class="p">,</span><span class="w"> </span><span class="n">in_height</span><span class="p">,</span><span class="w"> </span><span class="n">in_width</span><span class="p">,</span>
|
||
</span><span class="hll"><span class="linenos">24</span><span class="w"> </span><span class="n">out_height</span><span class="p">,</span><span class="w"> </span><span class="n">out_width</span><span class="p">,</span><span class="w"> </span><span class="n">height_scale</span><span class="p">,</span><span class="w"> </span><span class="n">width_scale</span><span class="p">,</span><span class="w"> </span><span class="n">core_mask</span><span class="p">);</span>
|
||
</span><span class="linenos">25</span><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
|
||
<span class="linenos">26</span><span class="p">}</span>
|
||
</pre></div>
|
||
</div>
|
||
<p><strong>私有存储版本:</strong></p>
|
||
<dl class="c function">
|
||
<dt class="sig sig-object c" id="c.fp_resizenearestneighborgrad_p">
|
||
<span class="kt"><span class="pre">void</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">fp_resizenearestneighborgrad_p</span></span></span><span class="sig-paren">(</span><span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">in_addr</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">out_addr</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">batch_size</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">channel</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">format</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">align_corners</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">in_height</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">in_width</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">out_height</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">out_width</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="n"><span class="pre">height_scale</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="n"><span class="pre">width_scale</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.fp_resizenearestneighborgrad_p" title="永久链接至目标"></a><br /></dt>
|
||
<dd></dd></dl>
|
||
|
||
<dl class="c function">
|
||
<dt class="sig sig-object c" id="c.hp_resizenearestneighborgrad_p">
|
||
<span class="kt"><span class="pre">void</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">hp_resizenearestneighborgrad_p</span></span></span><span class="sig-paren">(</span><span class="n"><span class="pre">half</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">in_addr</span></span>, <span class="n"><span class="pre">half</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">out_addr</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">batch_size</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">channel</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">format</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">align_corners</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">in_height</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">in_width</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">out_height</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">out_width</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="n"><span class="pre">height_scale</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="n"><span class="pre">width_scale</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.hp_resizenearestneighborgrad_p" title="永久链接至目标"></a><br /></dt>
|
||
<dd></dd></dl>
|
||
|
||
<dl class="c function">
|
||
<dt class="sig sig-object c" id="c.fp_resizebilineargrad_p">
|
||
<span class="kt"><span class="pre">void</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">fp_resizebilineargrad_p</span></span></span><span class="sig-paren">(</span><span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">in_addr</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">out_addr</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">batch_size</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">channel</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">format</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">align_corners</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">in_height</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">in_width</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">out_height</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">out_width</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="n"><span class="pre">height_scale</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="n"><span class="pre">width_scale</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.fp_resizebilineargrad_p" title="永久链接至目标"></a><br /></dt>
|
||
<dd></dd></dl>
|
||
|
||
<dl class="c function">
|
||
<dt class="sig sig-object c" id="c.hp_resizebilineargrad_p">
|
||
<span class="kt"><span class="pre">void</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">hp_resizebilineargrad_p</span></span></span><span class="sig-paren">(</span><span class="n"><span class="pre">half</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">in_addr</span></span>, <span class="n"><span class="pre">half</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">out_addr</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">batch_size</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">channel</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">format</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">align_corners</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">in_height</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">in_width</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">out_height</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">out_width</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="n"><span class="pre">height_scale</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="n"><span class="pre">width_scale</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.hp_resizebilineargrad_p" title="永久链接至目标"></a><br /></dt>
|
||
<dd></dd></dl>
|
||
|
||
<p><strong>C调用示例（双线性插值梯度）:</strong></p>
|
||
<div class="highlight-c notranslate"><div class="highlight"><pre><span></span><span class="linenos"> 1</span><span class="cp">#include</span><span class="w"> </span><span class="cpf"><stdio.h></span>
|
||
<span class="linenos"> 2</span><span class="cp">#include</span><span class="w"> </span><span class="cpf"><resizegrad.h></span>
|
||
<span class="linenos"> 3</span>
|
||
<span class="linenos"> 4</span><span class="kt">int</span><span class="w"> </span><span class="nf">main</span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">argc</span><span class="p">,</span><span class="w"> </span><span class="kt">char</span><span class="o">*</span><span class="w"> </span><span class="n">argv</span><span class="p">[])</span><span class="w"> </span><span class="p">{</span>
|
||
<span class="linenos"> 5</span><span class="w"> </span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="n">in_addr</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="p">)</span><span class="mh">0x10010000</span><span class="p">;</span>
|
||
<span class="linenos"> 6</span><span class="w"> </span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="n">out_addr</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="p">)</span><span class="mh">0x10020000</span><span class="p">;</span>
|
||
<span class="linenos"> 7</span>
|
||
<span class="linenos"> 8</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">batch_size</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">4</span><span class="p">;</span>
|
||
<span class="linenos"> 9</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">channel</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">3</span><span class="p">;</span>
|
||
<span class="linenos">10</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">format</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
|
||
<span class="linenos">11</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">align_corners</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
|
||
<span class="linenos">12</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">in_height</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">4</span><span class="p">,</span><span class="w"> </span><span class="n">in_width</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">4</span><span class="p">;</span>
|
||
<span class="linenos">13</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">out_height</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">6</span><span class="p">,</span><span class="w"> </span><span class="n">out_width</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">6</span><span class="p">;</span>
|
||
<span class="linenos">14</span>
|
||
<span class="linenos">15</span><span class="w"> </span><span class="kt">float</span><span class="w"> </span><span class="n">height_scale</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">float</span><span class="p">)</span><span class="n">out_height</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="n">in_height</span><span class="p">;</span>
|
||
<span class="linenos">16</span><span class="w"> </span><span class="kt">float</span><span class="w"> </span><span class="n">width_scale</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">float</span><span class="p">)</span><span class="n">out_width</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="n">in_width</span><span class="p">;</span>
|
||
<span class="linenos">17</span>
|
||
<span class="linenos">18</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">output_size</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">in_height</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">in_width</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">channel</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">batch_size</span><span class="p">;</span>
|
||
<span class="linenos">19</span><span class="w"> </span><span class="n">memset</span><span class="p">(</span><span class="n">out_addr</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">output_size</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="k">sizeof</span><span class="p">(</span><span class="kt">float</span><span class="p">));</span>
|
||
<span class="linenos">20</span>
|
||
<span class="hll"><span class="linenos">21</span><span class="w"> </span><span class="n">fp_resizebilineargrad_p</span><span class="p">(</span><span class="n">in_addr</span><span class="p">,</span><span class="w"> </span><span class="n">out_addr</span><span class="p">,</span><span class="w"> </span><span class="n">batch_size</span><span class="p">,</span><span class="w"> </span><span class="n">channel</span><span class="p">,</span>
|
||
</span><span class="hll"><span class="linenos">22</span><span class="w"> </span><span class="n">format</span><span class="p">,</span><span class="w"> </span><span class="n">align_corners</span><span class="p">,</span><span class="w"> </span><span class="n">in_height</span><span class="p">,</span><span class="w"> </span><span class="n">in_width</span><span class="p">,</span>
|
||
</span><span class="hll"><span class="linenos">23</span><span class="w"> </span><span class="n">out_height</span><span class="p">,</span><span class="w"> </span><span class="n">out_width</span><span class="p">,</span><span class="w"> </span><span class="n">height_scale</span><span class="p">,</span><span class="w"> </span><span class="n">width_scale</span><span class="p">);</span>
|
||
</span><span class="linenos">24</span><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
|
||
<span class="linenos">25</span><span class="p">}</span>
|
||
</pre></div>
|
||
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