SCANNING METHOD, INVERSE SCANNING METHOD, SCANNER AND INVERSE SCANNER OF ORTHOGONAL CONVERSION COEFFICIENT, ITS PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM RECORDING THE PROGRAM

摘要

PPROBLEM TO BE SOLVED: To improve an information transmission efficiency by suppressing an increase of computing cost for determining a scan order, and eliminating a necessity of transmitting mode numbers of the scan order to a decoding side. PSOLUTION: When a processing starts, two-dimensional data of quantized values from a first value to an N-th value is read in the fixed scan sequence (S1). Then, one scan pattern is determined from among a plurality of scan patterns for determining different scan orders, respectively, based on the read quantized value (S2). The two-dimensional data are converted into an one-dimensional data sequence by scanning the two-dimensional data of the quantized value according to the scan order of the determined scan pattern (S3). PCOPYRIGHT: (C)2007,JPO&INPIT