Method, medium, and system encoding and/or decoding an image using image slices

Abstract

An encoding method, medium, and system encoding an image, with an image being encoded by generating a plurality of image slices as images of each color component of the image and encoding the image slices in parallel with each other and independently of each other. Accordingly, although an image to be encoded has a large number of color components, the image can be compressed promptly. In addition, a decoding method, medium, and system are also provided decoding an image, with a plurality of encoded image slices being included in a corresponding bitstream, which are images of each color component of the image to be restored, are decoded in parallel with each other and independently of each other so as to restore the image using the decoded image slices. Accordingly, although an image to be decoded has a large number of color components, the image can be restored promptly.

What is claimed is: 
     
         1 . A method of decoding image data, the method comprising:
 decoding, performed by at least one processing device, color components from a bitstream based on information related to a chroma format, so as to generate a reconstructed picture;   obtaining information related to a filtering process from the bitstream; and   deblocking filtering on the reconstructed picture, except at least one of upper and left boundaries of each of slices in the reconstructed picture, based on the information related to the filtering process.   
     
     
         2 . The method of  claim 1 , wherein the decoding is performed for each slice in parallel. 
     
     
         3 . The method of  claim 2 , wherein each slice is generated by dividing the image data spatially. 
     
     
         4 . The method of  claim 2 , wherein each slice is generated by dividing the image data temporally. 
     
     
         5 . The method of  claim 1 , wherein the information related to the chroma format comprises a relationship between the color components and slices indicating whether respective slices contain each of the color components.