The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper describes the transform coding in the second generation of Audio-video Coding Standard (AVS2). In AVS2, 16-bit integer DCT transform scheme is adopted, with the transform block size varies from 4×4 to 32×32, and the smaller transform kernels are completely embedded in the larger ones. To keep strong decorrelation capability of the transform, a principle is proposed in this paper to design...
Integer cosine transform (ICT) is adopted by H.264/AVC for its bit-exact implementation and significant complexity reduction compared to the discrete cosine transform (DCT) with an impact in peak signal-to-noise ratio (PSNR) of less than 0.02 dB. In this paper, a new technique, named prescaled integer transform (PIT), is proposed. With PIT, while all the merits of ICT are kept, the implementation...
An elliptical symmetric model in spatial domain of natural image is proposed in this paper. Based on the model, the statistical properties of intra prediction error are studied. Furthermore, using the linear characteristic of discrete cosine transform (DCT) and the proposed model, we offer a mathematical analysis of the properties of DCT coefficient for intra prediction error. The horizontal intra...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.