Nvidia Corporation

Shantanu Nath

Vinayak Jayaram Pore

Pravin Karandikar

Jaya Shrikrishna Panvalkar

Parag Chaurasia

A method to detect (identify) wrongly decoded data (I type macro-blocks), which can be subsequently concealed by error concealment techniques, thereby improving the visual quality of a decoded stream, is provided. Additionally, a method is provided. In use, a set of macro-block data is selected for validation. Additionally, a set of suspicious macro blocks is selected from the set of macro-block data based on location information for each suspicious macro block.

Method and apparatus to check for wrongly decoded macroblocks in streaming multimedia applications

A method for concealing errors in compressed images in the JPEG 2000 format diosclosed. JPEG2000 (ISO/IEC 15444) is the new standard for image compression catering to different needs of various applications. This standard is much more advanced than JPEG and is rich in features. An Error concealment method in JPEG 2000 is provided which mainly deals with estimating the lost regions in a Wavelet Transformed image and works in Wavelet Transform Domain. This results in optimum error concealment and therefore, The method is applied before taking Inverse DWT.

Growing community of inventors

Pune, India

Shantanu Nath