Real time video defogging method
A real-time video and video image technology, applied in image data processing, instrumentation, computing and other directions, can solve the problems of reduced imaging quality, high computational complexity, foggy images without dehazing enhancement, etc., and achieve a high computing speedup ratio. , the effect of low computational complexity and high real-time performance
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[0020] Taking a certain type of DSP embedded system as an example, the method is executed by multi-core programming, and a fixed-complexity calculation method is used to perform real-time defogging and enhancement of video images, including the following steps:
[0021] In the first step, the input foggy image is scanned point by block according to multi-core parallelism, and the minimum value of the three channels of red, green and blue is obtained and stored as the minimum value image.
[0022] The second step is to use the VanHerk minimum value filtering algorithm to perform local minimum value filtering of the minimum value image. Due to the separable characteristics of the minimum value filter, after the image is filtered in the row direction, it is filtered again in the column direction to obtain the minimum value of the area. Stored as the initial value of the dark channel.
[0023] The third step is to perform guided filtering on the input dark channel initial value im...
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