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A processing method is described for the document image composed of characters, graphics and photographs, extracting those regions by the following procedures. (1) Two‐dimensional Fourier transformation is performed for the entire image, the angle of the character lines is corrected utilizing the peak coordinate of the transform result, and the period of the character lines is calculated. (2) Based on the real and imaginary parts of the transform result, the coordinates for the characters are calculated. (3) The two‐dimensional Fourier transformation is performed for the subpictures determined by the character period. The entire document is scanned and the regions are detected by determining the existence of the peak corresponding to the character‐line period. It is shown by experiment that the angle of the line can be detected with accuracy within 2 degrees between ‐45 and +45 degrees. An experiment was performed for the image (journal article and patent document) composed of graphics and photographs, and it is verified that the method can extract the regions with sufficient accuracy.

This paper covers a multi-functional hardware intellectual property (IP) for the encoding and decoding of digital moving pictures with low power consumption. The IP is mainly intended for mobile products such as cellular phones, digital still cameras (DSCs), and digital video cameras (DVCs). It includes VC-1 functionality for Internet content plus AVC (H.264) functionality for digital television broadcasting and MPEG-4 functionality for TV telephony, and is capable of processing Dl-sized moving pictures (720 pixels by 480 lines) in real time at an operating frequency of 54 MHz. In addition, original algorithms employed in the IP reduce power consumption by up to 22%.the Internet (VC-1); the hardware IP achieves real-time processing of all three.

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