Due to the widespread increase of wireless communication applications, the demand for image transmission over error-prone mobile channels is increasing rapidly. But, the presence of variable-length codes in most of the compression standards like the JPEG and the MPEG are highly sensitive to channel noise. We propose a novel bit plane error resilient entropy coding scheme for DCT-based  image compression, which can control and minimize the error propagation effect. The compressed rate is similar with the JPEG standard. However, it uses only 18 VLC symbols. Hardware implementation cost and power consumption can then be minimized. Base on simulation results, the proposed coding scheme can achieve high image quality (PSNR = 29.82dB) even at bit error rate of 10 -3 . An image codec has been implemented for verifying the proposed bit-plane EREC coding technique. It can compress and decompress CIF size (352 × 288, 4:2:0 format) images at the rate of 30 frames per second using 20MHz clock rate. It only occupies 36k gate count and 1.90 × 1.90 mm 2 silicon area in 0.35 CMOS process. With 3.3V power supply, the simulated power consumption is only 27mWatt and 0.41mA/MHz. These performances can meet various wireless portable multimedia system requirements.
|Journal||Proceedings - IEEE International Symposium on Circuits and Systems|
|State||Published - 1 Jan 2002|
|Event||2002 IEEE International Symposium on Circuits and Systems - Phoenix, AZ, United States|
Duration: 26 May 2002 → 29 May 2002