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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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STV3550 数据表(PDF) 31 Page - STMicroelectronics |
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STV3550 数据表(HTML) 31 Page - STMicroelectronics |
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31 / 144 page  STV3550 31/144 3.3.6.2 White Stretch The White Stretch algorithm is used on a dark sequence in order to increase the contrast on the entire image. By default, the inflexion point is based on the average brightness, but another value can be set by user. Two modes are available by setting the range parameter: 1. When Range = 0, the inflection point is based on the value the average brightness. 2. When Range = 1, 2 or 3, the inflexion point IS NOT BASED on the value of the average brightness, but is used as parameter for an extended set of possibilities. The following figures shows various examples of the white stretch algorithm with the following values: Gain = 7, Range = 0 and an Average Brightness of 64. Figure 19: White Stretch 1 |
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