Apparatus and method for processing digital signal

Abstract

Disclosed are an apparatus and method for processing a digital signal including a 3D image. The apparatus includes a receiver for receiving a first digital signal including a main image and a second digital signal including an additional image, the main image and the additional image being 3D images, and the additional image being an expanded image of the main image seamlessly connected to an edge region of the main image, an image processor for generating the main image and the additional image to output a 3D image by decoding the first and second digital signals, and a display unit for displaying the output 3D image. The display unit includes a first display unit for displaying the main image, and a transparent second display unit connected to an edge of the first display unit, the second display unit configured to display the additional image.

What is claimed is: 
     
         1 . A digital signal processing apparatus comprising:
 a receiver configured to receive a first digital signal including a main image and a second digital signal including an additional image, wherein the main image and the additional image are 3D images, and the additional image is an expanded image of the main image and is seamlessly connected to an edge region of the main image;   an image processor configured to generate the main image and the additional image to output a 3D image by decoding the first digital signal and the second digital signal; and   a display unit configured to display the output 3D image,   wherein the display unit includes:   a first display unit configured to display the main image of the 3D image; and   a second display unit in the form of a transparent display unit connected to an edge of the first display unit, the second display unit configured to display the additional image of the 3D image.   
     
     
         2 . The digital signal processing apparatus according to  claim 1 ,
 wherein the additional image included in the second digital signal includes only pixels having negative binocular disparity, and   wherein the negative binocular disparity provides a forward depth of the display unit.   
     
     
         3 . The digital signal processing apparatus according to  claim 1 , wherein the image processor is further configured to determine signs of binocular disparity by comparing pixels of a left view image and a right view image of the generated additional image with each other. 
     
     
         4 . The digital signal processing apparatus according to  claim 1 ,
 wherein the image processor selectively outputs the 3D image including only pixels having negative binocular disparity of the generated additional image, and   wherein the negative binocular disparity provides a forward depth of the display unit.   
     
     
         5 . The digital signal processing apparatus according to  claim 1 , wherein the image processor is further configured to synchronize the main image and the additional image. 
     
     
         6 . A digital signal processing apparatus comprising:
 a receiver configured to receive a digital signal including a 3D image; and   an image processor configured to generate the 3D image by decoding the digital signal, setting an edge region of the 3D image, and selectively outputting only pixels having negative binocular disparity with respect to the set edge region,   wherein the negative binocular disparity provides a forward depth of a display unit.   
     
     
         7 . The digital signal processing apparatus according to  claim 6 ,
 wherein the digital signal includes a left view image and a right view image for the 3D image, and   wherein the image processor is further configured to determine signs of binocular disparity of pixels by comparing the pixels of the left view image and the right view image with each other.   
     
     
         8 . The digital signal processing apparatus according to  claim 6 ,
 wherein the digital signal includes image data and depth information, and   wherein the image processor is further configured to determine signs of binocular disparity of the respective pixels based on the depth information.   
     
     
         9 . The digital signal processing apparatus according to  claim 6 ,
 wherein the 3D image includes a plurality of layers having different depths,   wherein the image processor is further configured to crop the set edge region with respect to some layers of the plurality of layers having positive binocular disparity, and   wherein the positive disparity provides a rearward depth of the display unit.   
     
     
         10 . The digital signal processing apparatus according to  claim 6 , wherein the set edge region is set in consideration of at least one of positions, movement directions, and movement speeds of images constituted by the pixels having negative binocular disparity within the generated 3D image. 
     
     
         11 . A digital signal processing method comprising:
 receiving a first digital signal including a main image and a second digital signal including an additional image, wherein the main image and the additional image are 3D images, and the additional image is an expanded image of the main image and is seamlessly connected to an edge region of the main image;   generating the main image and the additional image to output a 3D image by decoding the first digital signal and the second digital signal; and   displaying the output 3D image consisting of the main image and the additional image seamlessly connected to each other.   
     
     
         12 . The digital signal processing method according to  claim 11 ,
 wherein the additional image included in the second digital signal includes only pixels having negative binocular disparity, and   wherein the negative binocular disparity provides a forward depth of a display unit.   
     
     
         13 . The digital signal processing method according to  claim 11 , wherein the outputting the 3D image further includes determining signs of binocular disparity by comparing pixels of a left view image and a right view image of the generated additional image with each other. 
     
     
         14 . The digital signal processing method according to  claim 11 ,
 wherein the outputting the 3D image further includes selectively outputting only pixels having negative binocular disparity of the generated additional image, and   wherein the negative binocular disparity provides a forward depth of a display unit.   
     
     
         15 . The digital signal processing method according to  claim 11 , wherein the outputting the 3D image further includes synchronizing the main image and the additional image. 
     
     
         16 . A digital signal processing method comprising:
 receiving a digital signal including a 3D image;   generating the 3D image by decoding the digital signal;   setting an edge region of the 3D image; and   selectively outputting only pixels having negative binocular disparity with respect to the set edge region,   wherein the negative binocular disparity provides a forward depth of a display unit.   
     
     
         17 . The digital signal processing method according to  claim 16 ,
 wherein the digital signal includes a left view image and a right view image for the 3D image, and   wherein the selectively outputting further includes determining signs of binocular disparity of the pixels by comparing the pixels of the left view image and the right view image with each other.   
     
     
         18 . The digital signal processing method according to  claim 16 ,
 wherein the digital signal includes image data and depth information, and   wherein the selectively outputting further includes determining signs of binocular disparity of the respective pixels based on the depth information.   
     
     
         19 . The digital signal processing method according to  claim 16 ,
 wherein the 3D image includes a plurality of layers having different depths,   wherein the selectively outputting further includes cropping the set edge region with respect to some layers of the plurality of layers having positive binocular disparity, and   wherein the positive disparity provides a rearward depth of the display unit.   
     
     
         20 . The digital signal processing method according to  claim 16 , wherein the set edge region is set in consideration of at least one of positions, movement directions, and movement speeds of images constituted by the pixels having negative binocular disparity within the generated 3D image.