Title :
Image coding using discrete sine transform with axis rotation
Author :
Pelaes, Evaldo Gonçalves ; Iano, Yuzo
Author_Institution :
Univ. Federal do Para, Campinas, Brazil
fDate :
11/1/1998 12:00:00 AM
Abstract :
The blocking effect is a common problem that is always present in image coding when using the blocking transform. A simple method for image coding, with low blocking effect, using pre- and post-axis rotation and the discrete sine transform, is proposed. It uses the overlap of only the sample and the total number of transform coefficients remains the same as the number of pixels in the original image. The method was implemented, and the results obtained by simulation in the image coding are compared with image coding by DCT, DST, and LOT
Keywords :
discrete transforms; image coding; quantisation (signal); transform coding; DCT; DST; LOT; blocking effect; blocking transform; discrete sine transform; image coding; inverse transform; pixels; post-axis rotation; pre-axis rotation; quantization; simulation; transform coding; transform coefficients; Bit rate; Discrete cosine transforms; Discrete transforms; Image coding; Laplace equations; Pixel; Transform coding;
Journal_Title :
Consumer Electronics, IEEE Transactions on
