Among the variety of multimedia formats, color images play a prominent role. A technique for lossless compression of color images is introduced. The technique is composed of first transforming a red, green, and blue i...
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Among the variety of multimedia formats, color images play a prominent role. A technique for lossless compression of color images is introduced. The technique is composed of first transforming a red, green, and blue image into luminance and chrominance domain (YCuCv). Then, the luminance channel Y is compressed with a context-based, adaptive, lossless image coding technique (CALIC). After processing the chrominance channels with a hierarchical prediction technique that was introduced earlier, Burrows-Wheeler inversion coder or JPEG 2000 is used in compression of those C-u and C-v channels. It is demonstrated that, on a wide variety of images, particularly on medical images, the technique achieves substantial compression gains over other well-known compression schemes, such as CALIC, M-CALIC, Better Portable Graphics, JPEG-LS, JPEG 2000, and the previously proposed hierarchical prediction and context-adaptive coding technique LCIC. (C) 2019 SPIE and IS&T
A new segmented group-inversion coding is proposed to achieve current balancing in single-ended parallel data transmission. With minimal increase in number of pins, the proposed coding reduces the difference between t...
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A new segmented group-inversion coding is proposed to achieve current balancing in single-ended parallel data transmission. With minimal increase in number of pins, the proposed coding reduces the difference between the number of ZEROS and ONEs to only 0 or 2. Since the proposed coding is a simple inversion-or-not transformation of pre-defined groups of binary data, it can be implemented with greatly simplified logic circuits. Generalization for the optimum grouping is also presented. A transmitter with 16-bit link was designed for verification. The proposed coding scheme is suitable for gigabit parallel links to reduce the simultaneous switching noise.
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