Block Error Compensating Apparatus of Image Frame and Method Thereof

Abstract

An apparatus and method are provided for compensating a block error in an image frame. This may include a video codec decoder for decoding an inputted image frame, and outputting a decoded image frame. An error concealment block may detect an error-generated block in the decoded image frame and compensate the detected error block through a median filter, and output the compensated image frame.

1 . (canceled) 
     
     
         2 . A method comprising:
 receiving a coded bit-stream;   reconstructing a video frame from the received coded bit-stream, the reconstructed video frame including at least one target pixel block to be filtered; and   filtering said target pixel block by using at least one pixel value of said target pixel block and multiple pixel values of another pixel block adjacent to said target pixel block,   wherein said filtering comprises:
 obtaining an absolute value of a result from calculations using a difference between said at least one pixel value of said target pixel block and at least one of said multiple pixel values of said another pixel block, 
   obtaining, based on a comparison of said absolute value with a particular value, a compensation value calculated by using said at least one pixel value and said multiple pixel values, and   applying said compensation value to compensate for said target pixel block.   
     
     
         3 . The method of  claim 2 , wherein the video frame is an intra-coded frame. 
     
     
         4 . The method of  claim 2 , wherein the video frame is a predictive-coded frame. 
     
     
         5 . The method of  claim 2 , wherein said at least one pixel value and said multiple pixel values are successive in a horizontal direction. 
     
     
         6 . The method of  claim 2 , wherein said at least one pixel value and said multiple pixel values correspond to successive pixels in a vertical direction. 
     
     
         7 . The method of  claim 2 , wherein said target pixel block and said one other pixel block are adjacent in a horizontal direction. 
     
     
         8 . The method of  claim 2 , wherein said target pixel block and said one other pixel block are adjacent in a vertical direction. 
     
     
         9 . The method of  claim 2 , wherein said at least one pixel value and said multiple pixel values correspond to pixels separated by a pixel block boundary. 
     
     
         10 . The method of  claim 9 , wherein said filtering step is additionally performed with respect to a third pixel block, said third pixel block being different from said another pixel block and adjacent to said target pixel block.