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热词
    • 10. 发明授权
    • Method of encoding data to minimize the number of codewords
    • 对数据进行编码以最小化码字数量的方法
    • US6118904A
    • 2000-09-12
    • US140741
    • 1998-08-27
    • J. Lewis DetchAlan S Ratner
    • J. Lewis DetchAlan S Ratner
    • G06K9/36H03M7/00H04N1/419
    • H04N1/419H03M7/4081H03M7/46H03M7/6011H04N19/93
    • A method of run-length encoding an image containing runs of white pixels and black pixels, by acquiring the image to encode; determining the length of all unique pixel run-lengths contained within the image on a line-by-line basis, irrespective of pixel color; selecting a base of a numeral system, where the base is made up of digits; generating a number of unequal-length codewords equal to the base; determining, in order, pixel run-lengths, on a line-by-line basis, for each pixel run-length contained in the image, where counting on each line starts with a particular pixel color; representing each pixel run-length determined in the last step in the numeral system of the base; determining the frequency of occurrence of each digit resulting from the last step; assigning the unequal-length codewords, according to ascending length of the unequal-length codewords, to the digits according to descending order of frequency of occurrence of the digits; and encoding the image by replacing each pixel run-length in the image represented in digit form with the corresponding unequal-length codeword.
    • 一种通过获取要编码的图像来对包含白色像素和黑色像素的运动的图像进行游程长度编码的方法; 不考虑像素颜色,逐行地确定包含在图像内的所有唯一像素游程长度; 选择数字系统的基数,其中基数由数字组成; 产生等于基数的多个不等长码字; 针对包含在图像中的每个像素游程长度,逐行地确定像素游程长度,其中每行上的计数以特定像素颜色开始; 表示在基座的数字系统中的最后一步中确定的每个像素游程长度; 确定由最后一步产生的每个数字的发生频率; 根据不等长码字的上升长度,按照数字出现频率的降序,将不等长码字分配给数字; 并且通过将用数字形式表示的图像中的每个像素游程长度替换为相应的不等长码字来对图像进行编码。