Best neighborhood matching: an information loss restoration technique for block-based image coding systems
نویسندگان
چکیده
Imperfect transmission of block-coded images often results in lost blocks. A novel error concealment method called best neighborhood matching (BNM) is presented by using a special kind of information redundancy-blockwise similarity within the image. The proposed algorithm can utilize the information of not only neighboring pixels, but also remote regions in the image. Very good restoration results are obtained by experiments.
منابع مشابه
Fast Image Restoration using the Multi-Layer Best Neighborhood Matching Approach
This paper presents an accurate and fast image restoration for lost block images via wireless image transmission. In the network transmission of block-coded images, fading in wireless channels and congestion in packet switched networks could cause entire blocks to be lost. Instead of using retransmission query protocols, we reconstruct the lost block on the wavelet domain that considers the rel...
متن کاملConcealment of damaged block transform coded images using projections onto convex sets
An algorithm for lost signal restoration in block-based still image and video sequence coding is presented. Problems arising from imperfect transmission of block-coded images result in lost blocks. The resulting image is flawed by the absence of square pixel regions that are notably perceived by human vision, even in real-time video sequences. Error concealment is aimed at masking the effect of...
متن کاملImage Error Concealment Based on Watermarking
Imperfect transmission of block-coded images often causes lost blocks. These blocks may contain very important information of image. In this paper a new error concealment scheme is proposed for restoring lost blocks of images. It is based on the robust watermark technique to restore lost blocks in the region-of-interest (ROI) and the best-neighborhood-matching (BNM) technique to restore lost bl...
متن کامل3D-Deblocking for Error Concealment in Block-Based Video Decoding Systems
In this contribution we propose a 3D-deblocking method for macroblock loss recovery in block-based video decoding systems. For a lost macroblock, the motion vector is estimated. Using the estimated motion vector a deblocking filter recovers the lost macroblock by the corresponding motion compensated image samples of the previous frame. Macroblock borders are filtered, if block artifacts are est...
متن کاملNeighborhood matrix: A new idea in matching of two dimensional gel images
Automated data analysis and pattern recognition techniques are the requirements of biological and proteomicsresearch studies. The analysis of proteins consists of some stages among which the analysis of two dimensionalelectrophoresis (2-DE) images is crucial. The aim of image capturing is to generate a Photostat that can be used infuture works such as image comparison. The researchers introduce...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- IEEE transactions on image processing : a publication of the IEEE Signal Processing Society
دوره 7 7 شماره
صفحات -
تاریخ انتشار 1998