Real-time lossless compression method for image
A lossless compression and image technology, applied in image communication, television, electrical components, etc., can solve the problems that there is no suitable solution method for the range of parameter changes, cannot meet real-time requirements, and compressed data cannot be decoded and restored, etc., to achieve effective Facilitate real-time compression and transmission, easy hardware implementation, and reduce the effect of encoding calculations
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[0065] Such as figure 1 Shown, a kind of image real-time lossless compression method of the present invention comprises the following steps:
[0066] 1) Set the predictor length according to the specification size of the input original image;
[0067] 2) According to the characteristics of strong spatial correlation between adjacent pixels of the input image, the improved JPEG-LS predictor is used for prediction, and the difference between the actual value and the predicted value is obtained to obtain the residual (or "difference value") and Mapped to a non-negative integer to obtain the preprocessing result of the input image for subsequent Rice encoding;
[0068] 3) Splitting and accumulating according to the different values of the sample splitting mode k according to the preprocessing result of the input image, and calculating the total code length in each case when k=0, 1, 2, ..., n-3, and then Compare, take the k value corresponding to the minimum value of the code l...
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