A Research On The Processing Of Color Image Based On Digital Camera

With the continuous increase of computer performance, advancement of machine vision research, development of multimedia technology and virtual reality technology, in particular color imaging devices continue to improve, the collection, transmission and processing of objects'color will become important research trends of image project. Color image processing is the color of specialized information processing technology about color information in pictures. A series of operation technology of color image to achieve desired objectives is known as the color image processing. Color image processing system includes color image segmentation, target identification, feature extraction, and other image processing projects. Image preprocessing decides the accuracy and difficulty of process behind. The purpose of color image segmentation is separate interested object from background, so that is easy to the geometric measurement and configuration evaluation.Octree arithmetic would be applied in color quantization, Vector Median Filter would be used to eliminate noise, this paper give some common methods of color image preprocessing, then to discuss about window parameters of Vector Median Filter, obtained effect evaluation methods through color information similarity theory at last. An adaptive clustering algorithm with variable number of the target area is designed in RGB color space. The reasonable structures of the processing were found for digital camera, the chromatism will be controlled within 3ΔE units. Pretreated and un-pretreated color images were segmented respectively, then a workpiece was experimented within the methods designed above. The experiments results showed that Octree Color Quantization and Vector Median Filter perform all well in preprocessing of color image, and adaptive K-means color segmentation is a faster, reasonable regional segmentation and the regional border connectivity color image segmentation tool, the segmentation areas of the highest number of goals can be achieved 8 for 1022*686 color picture pretreated.