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Alternative TitleReal-time lossless compression method for image
魏永旺; 罗海波; 陈永红; 惠斌; 常铮
Rights Holder中国科学院沈阳自动化研究所
Patent Agent沈阳科苑专利商标代理有限公司 21002
Other AbstractThe invention relates to a real-time lossless compression method for an image. The method comprises the following steps: setting the length of a predictor according to the specification of an input initial image; predicting by using a JPEG-LS (Information T) predictor according to the input image, and carrying out subtraction on the actual value and the predicted value to obtain a residual which can be mapped to a nonnegative integer and a preprocessing result of the input image; dividing and accumulating according to the different values of division mode k and the preprocessing result of the input image, and calculating a total code length when k is equal to 0, 1, 2,..., n-3, marking a k value which corresponds to the minimum value of the code length as a k<*>, wherein n is a bit wide when the pixel value of the imported image is converted to a binary system; dividing a sample of the whole image according to the k<*> to obtain a compressed code steam for storing or transmitting. For a gray image with poor continuous color tonality, particularly a spaceborne remote sensing image, the invention can effectively reduce the space redundancy of the whole image and decrease the average value of the sample; and meanwhile, any information cannot be lost during the whole coding process and a lossless compression can be realized.
PCT Attributes
Application Date2010-04-09
Date Available2014-03-19
Application NumberCN201010142893.5
Open (Notice) NumberCN102215385A
Contribution Rank1
Document Type专利
Recommended Citation
GB/T 7714
魏永旺,罗海波,陈永红,等. 一种图像实时无损压缩方法[P]. 2011-10-12.
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