METHOD AND APPARATUS FOR LOCALLY SHARPENING A VIDEO IMAGE USING A SPATIAL INDICATION OF BLURRING
First Claim
1. A method comprising:
- receiving a video signal;
obtaining a spatial indication of blurring associated with the video signal;
locally adjusting the sharpness of the received video signal using the spatial indication of blurring wherein strength of sharpening is locally decreased for blurred area; and
providing the adjusted video signal for display on a display device.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods and an apparatus for locally sharpening a video using a spatial indication of blurring in a video signal are described. A method includes obtaining the spatial indication of blurring associated with the video signal, wherein the spatial indication of blurring is provided to locally adjust the sharpness of a video image of the video signal, the strength of sharpening being locally decreased for blurred area. Another method includes obtaining a video signal, obtaining a spatial indication of blurring, adjusting the sharpness of the video signal using the indication of the blurring, and providing the adjusted video signal for display on a display device. An apparatus includes a tuner that receives a video signal and a processor for obtaining (either from metadata or from video signal processing) a spatial indication of blurring associated with the video signal, a video processor that adjusts the locally sharpness of the video signal using the spatial indication of the blurring, and a display interface that provides the adjusted video signal for display.
12 Citations
22 Claims
-
1. A method comprising:
-
receiving a video signal; obtaining a spatial indication of blurring associated with the video signal; locally adjusting the sharpness of the received video signal using the spatial indication of blurring wherein strength of sharpening is locally decreased for blurred area; and providing the adjusted video signal for display on a display device. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. An apparatus comprising:
-
a tuner for receiving a video signal; a processor configured for; obtaining a spatial indication of blurring associated with the video signal; locally adjusting the sharpness of the received video signal using the spatial indication of blurring wherein strength of sharpening is locally decreased for blurred area; and providing the adjusted video signal for display on a display device. - View Dependent Claims (8, 9, 10, 11, 12)
-
-
13. A non-transitory program storage device that is readable by a computer, tangibly embodies a program of instructions executable by the computer to receive a video signal;
-
obtain a spatial indication of blurring associated with the video signal; locally adjust the sharpness of the received video signal using the spatial indication of blurring wherein strength of sharpening is locally decreased for blurred area; and provide the adjusted video signal for display on a display device.
-
-
14. A method comprising:
generating a spatial indication of blurring associated with a video signal, wherein the spatial indication of blurring includes a blur metric for each pixel of each video frame in the video signal, the blur metric is an average sum of singular values determined for a patch centered on said pixel of a processed video image using a Singular Value Decomposition, wherein the spatial indication of blurring is used to locally adjust the sharpness of a video image of the video signal and wherein strength of sharpening is locally decreased for pixels with increasing blur metric. - View Dependent Claims (15, 16, 17)
-
18. An apparatus comprising a processor configured for
generating a spatial indication of blurring associated with a video signal, wherein the spatial indication of blurring includes a blur metric for each pixel of each video frame in the video signal, the blur metric is an average sum of singular values determined for a patch centered on said pixel of a processed video image using a Singular Value Decomposition, wherein the spatial indication of blurring is used to locally adjust the sharpness of a video image of the video signal and wherein strength of sharpening is locally decreased for pixels with increasing blur metric.
-
22. A non-transitory program storage device that is readable by a computer, tangibly embodies a program of instructions executable by the computer to
generate a spatial indication of blurring associated with a video signal, wherein the spatial indication of blurring includes a blur metric for each pixel of each video frame in the video signal, the blur metric is an average sum of singular values determined for a patch centered on said pixel of a processed video image using a Singular Value Decomposition, wherein the spatial indication of blurring is used to locally adjust the sharpness of a video image of the video signal and wherein strength of sharpening is locally decreased for pixels with increasing blur metric.
Specification