JPEG 2000, a new international standard for still image compression, is discussed at length. A high-level introduction to the JPEG-2000 standard is given, followed by a detailed technical description of the JPEG2000 Part-1 codec. Keywords—JPEG 2000, still image compression/coding, standards.

Striving to maximize baseline (Joint Photographers Expert Group-JPEG) image quality without compromising compatibility of current JPEG decoders, we develop an image-adaptive JPEG encoding algorithm that jointly optimizes quantizer selection, coefficient "thresholding", and Huffman coding within a rate-distortion (R-D) framework. Practically speaking, our algorithm unifies two previous approache...

—This paper proposes new concepts of the windowed all phase biorthogonal transform (WAPBT), which is inspired by the all phase biorthogonal transform (APBT). In the light of windowed all phase digital filter theory, windowed all phase biorthogonal transforms is proposed. The matrices of WAPBT based on DFT, WHT, DCT and IDCT are deduced, which can be used in image compression instead of the con...

In this paper we propose a method for computing JPEG quantization matrices for a given mean square error or PSNR. Then, we employ our method to compute JPEG standard progressive operation mode definition scripts using a quantization approach. Therefore, it is no longer necessary to use a trial and error procedure to obtain a desired PSNR and/or definition script, reducing cost. Firstly, we esta...

This paper presents a JPEG-like coder for image compression of single-sensor camera images using a Bayer Color Filter Array (CFA). The originality of the method is a joint scheme of compression.demosaicking in the DCT domain. In this method, the captured CFA raw data is first separated in four distinct components and then converted to YCbCr. A JPEG compression scheme is then applied. At the dec...

An eecient compression/decompression scheme is described for the compression of image data gathered for engineering use on Mars Pathhnder: the image is pixel-averaged at diierent downsampling factors horizontally and vertically (step 1), JPEG compressed (step 2), JPEG decompressed (step 3) and interpolated to its original size (step 4). Optimal interpolation lters (step 4) are derived to minimi...

This chapter covers the JPEG compression algorithm, which is primarily used for full-color still image applications. First, we describe various image presentations, such as RGB, YUV, and YCbCr, and standard image formats. Then, we describe all components of the JPEG algorithm including discrete cosine transform, quantization, and entropy encoding. We also define both encoder and decoder archite...

JPEG-LS is the latest pixel based lossless to near lossless still image coding standard introduced by the Joint Photographic Experts Group (JPEG) '. In this standard simple localized edge detection techniques are used in order to determine the predictive value of each pixel. These edge detection techniques only detect horizontal and vertical edges and the corresponding predictors have only been...

Recently, the JPEG images are the most common format for storing images. JPEG images are very abundant on the Internet bulletin boards and public Internet sites. So it attracted the attention of researchers as the main steganographic format. There are many new and powerful steganography and steganalysis techniques in JPEG images reported in the literature, in the last few years. In this paper, ...

JPEG 2000, a new international standard for still image compression, is discussed at length. A high-level introduction to the JPEG-2000 standard is given, followed by a detailed technical description of the JPEG2000 Part-1 codec. Keywords—JPEG 2000, still image compression/coding, standards.