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Although JPEG2000 is powerful for image compression, since it requires a large buffer size, it is not as popular as JPEG. In industry, less buffer size requirement is an important issue in image compression because in many embedded systems and mobile devices, such as cell phones, TV, and digital cameras, the buffer sizes are usually very small. A large buffer size means large space requirement and...
In this paper, two coding strategies are proposed to improve the coding efficiency of the JPEG2000 system. First, instead of using the embedded block coding with optimized truncation (EBCOT) scheme in all subbands, we apply the algorithm based on least square prediction in the LL part of the discrete wavelet transform domain. Moreover, in the LH, HL, and HH parts, instead of using the MQ coder and...
Golomb coding is useful for encoding geometrically distributed data and plays an important role in advanced compression techniques, such as JPEG-LS and H.264. In this paper, a new Golomb coding method for asymmetric two-sided geometrically distributed data is proposed. An asymmetrical model means that the value of x can be positive or negative, but the ratio P(x = −n)/P(x = −n−1) is unequal to P(x...
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