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10 | 10 |
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11 | 11 | 亮度调整是将图像像素的强度整体变大/变小，对比度调整指的是图像暗处的像素强度变低，亮出的变高，从而拓宽某个区域内的显示精度。 |
12 | 12 |
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13 | | -OpenCV中亮度和对比度应用这个公式来计算： |
14 | | - |
15 | | -<span class="mrow" id="MathJax-Span-2"><span class="mi" id="MathJax-Span-3" style="font-family: MathJax_Math-italic;">g<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-4" style="font-family: MathJax_Main;">(</span><span class="mi" id="MathJax-Span-5" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-6" style="font-family: MathJax_Main;">)</span><span class="mo" id="MathJax-Span-7" style="font-family: MathJax_Main; padding-left: 0.281em;">=</span><span class="mi" id="MathJax-Span-8" style="font-family: MathJax_Math-italic; padding-left: 0.281em;">α</span><span class="mi" id="MathJax-Span-9" style="font-family: MathJax_Math-italic;">f<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.058em;"></span></span><span class="mo" id="MathJax-Span-10" style="font-family: MathJax_Main;">(</span><span class="mi" id="MathJax-Span-11" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-12" style="font-family: MathJax_Main;">)</span><span class="mo" id="MathJax-Span-13" style="font-family: MathJax_Main; padding-left: 0.225em;">+</span><span class="mi" id="MathJax-Span-14" style="font-family: MathJax_Math-italic; padding-left: 0.225em;">β<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span> |
16 | | - |
17 | | -，其中：α(>0)、β常称为增益与偏置值，分别控制图片的对比度和亮度。 |
| 13 | +OpenCV中亮度和对比度应用这个公式来计算：<span class="mrow" id="MathJax-Span-2"><span class="mi" id="MathJax-Span-3" style="font-family: MathJax_Math-italic;">g<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-4" style="font-family: MathJax_Main;">(</span><span class="mi" id="MathJax-Span-5" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-6" style="font-family: MathJax_Main;">)</span><span class="mo" id="MathJax-Span-7" style="font-family: MathJax_Main; padding-left: 0.281em;">=</span><span class="mi" id="MathJax-Span-8" style="font-family: MathJax_Math-italic; padding-left: 0.281em;">α</span><span class="mi" id="MathJax-Span-9" style="font-family: MathJax_Math-italic;">f<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.058em;"></span></span><span class="mo" id="MathJax-Span-10" style="font-family: MathJax_Main;">(</span><span class="mi" id="MathJax-Span-11" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-12" style="font-family: MathJax_Main;">)</span><span class="mo" id="MathJax-Span-13" style="font-family: MathJax_Main; padding-left: 0.225em;">+</span><span class="mi" id="MathJax-Span-14" style="font-family: MathJax_Math-italic; padding-left: 0.225em;">β<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span>，其中：α(>0)、β常称为增益与偏置值，分别控制图片的对比度和亮度。 |
18 | 14 |
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19 | 15 | >经验之谈：此处对α/β控制对比度和亮度有争议，具体请参考：[OpenCV关于对比度和亮度的误解](http://blog.csdn.net/abc20002929/article/details/40474807)。 |
20 | 16 |
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