Error resilient image coding and smart post-processing error concealment for wireless image transmission

In recent years, there has been a huge growth in the areas of multimedia and wireless communications. Image transmission through bandwidth limited and high bit error rate wireless channel requires both compression and error resilient capabilities. We propose an error resilient image coding and smart...

Celý popis

Uloženo v:
Podrobná bibliografie
Vydáno v:2002 IEEE International Conference on Acoustics, Speech, and Signal Processing Ročník 4; s. IV-4182
Hlavní autoři: Ong, Keng-Khai, Lee, Yew-San, Lee, Chen-Yi
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 01.01.2002
Témata:
Artificial neural networks
Memory management
Power amplifiers
Wireless communication
ISBN:9780780374027, 0780374029
ISSN:1520-6149
On-line přístup:Získat plný text
Tagy: Přidat tag
Žádné tagy, Buďte první, kdo vytvoří štítek k tomuto záznamu!
Popis
Shrnutí:In recent years, there has been a huge growth in the areas of multimedia and wireless communications. Image transmission through bandwidth limited and high bit error rate wireless channel requires both compression and error resilient capabilities. We propose an error resilient image coding and smart error concealment schemes for DCT-based [1] image compression, such as JPEG and MPEG standards. It can successfully prevent error propagation between the transmitted data blocks with little overhead. In addition, we present a novel post-processing error concealment scheme, called Smart-IDCT (SIDCT). It tries to retain error free low frequency DCT information and discarding highly suspicious high frequency information. Then, we can retrieve low-resolution information instead of totally corrupted image block during the decoding process. The required computation power is much less than conventional error detection and correction schemes. Simulation results show that the overhead of ERIC is about 5% compared to the JPEG sequential DCT-based mode without restart marker. With the SIDCT post-processing, it can achieve excellent image quality (PSNR=31.78dB).
ISBN:9780780374027
0780374029
ISSN:1520-6149
DOI:10.1109/ICASSP.2002.5745649