Study on High-Quality Wide Dynamic Image Synthesis Algorithm in Multiple Image Processing

Abstract

The key to adopting DSP technology to deal with multiple images into a high quality wide dynamic image is to a dopt a suitable synthesis algorithm. In order to solve the puzzle of synthetic effects in image by image synthesis method and weighted average method based on relative illumination, the paper presented a new method for synthesizing a wide dynamic range image by image weighted fusion and later mapping. In the paper, we firstly explored the synthetic principle, by means of adjusting the fusion ratio of multiple images, obtained the fused image. Then, the image data of fused image was mapped to the interval of (0, 1) by using the mapping method of wide dynamic image. Finally, the corresponding data was mapped to the interval range of (0, 255). The actual test demonstrated that we could obtain a better synthetic wide dynamic image effect by using the presented method regardless of the length of the exposure light time being a big difference or not. The study results show that the presented new algorithm is simple and has strong real-time performance.