by Storming Media .
Written in English
|The Physical Object|
2. IMAGE COMPRESSION Digital images are used every day. A digital image is essentially a 2D data array x(i,j), where i and j index the row and column of the data array, and each of the data point x(i,j) is referred as a pixel. For the gray image, each pixel is of an intensity value by: JPEG is the only standard compression scheme that provides for both lossless and lossy compression. As such, it lends itself to applications that require high-quality images despite limitations on storage or transmission bandwidths. An important feature of . The book also presents implementation strategies accompanied by existing software and hardware solutions. Describes secure JPEG (JPSEC), interactivity protocols (JPIP), volumetric image data compression (JP3D) and image compression in wireless environments (JPWL), amongst others. JPEG represents advances in image compression technology where the image coding system is optimized for efficiency, scalability, and interoperability in network and mobile environments. the encoder, the discrete transform is first applied on the source image data.
JPEG (JP2) is an image compression standard and coding system. It was developed from to by a Joint Photographic Experts Group committee chaired by Touradj Ebrahimi (later the JPEG president), with the intention of superseding their original discrete cosine transform (DCT) based JPEG standard (created in ) with a newly designed, wavelet-based method. The JPEG Suite provides a comprehensive overview of the baseline JPEG standard and its extensions. The first part of the book sets out the core coding system, additions to the standard and reference software. The second part discusses the successful deployment of JPEG in application domains such as video surveillance, digital cinema, digital television, medical imaging, . That book includes a sample code CD and covers several other image encoding schemes as well. But it only handles the most common JPEG compressed streams whereas this book "JPEG Still Image Data Compression Standard" is encyclopedic and three times the s: Comparing the JPEG- and JPEGencoding quality of IrfanView, we find that JPEG has a slight edge at low compression ratios, while JPEG .
The amount of compression, and the resulting loss of image quality, can be selected when the JPEG compression program is run. Figure shows the type of image distortion resulting from high compression ratios. With the compression ratio shown, each of the 8×8 groups is represented by only about 12 bits. JPEG is an image-encoding system created in as a single architecture by the Joint Photographic Experts Group to replace JPEG. Incorporated were state-of-the-art compression techniques based on a discrete transformation of wavelengths, enabling a lossless reduction in file size. On top of very high coding efficiency, JPEG also provides with a number of highly desirable features such as seamless progressive transmission by resolution or quality, lossy to lossless compression, random code stream access, continuous-tone and bi-level compression, and region of interest. DICOM JPEG JPEG is an image coding system that uses state-of-the-art compression techniques based on wavelet technology. The JPEG standard was adopted by ISO as ISO/IEC (JPEG ), for digital compressionand coding of continuous-tone still images.