Image processing circuit and image processing method for generating interpolated image
First Claim
Patent Images
1. An image processing circuit, comprising:
- a full search engine, which executes a full search to generate a sum of absolute differences (SAD) distribution according to a reference image and a current image, wherein the SAD distribution comprises a plurality of sums of absolute differences; and
a frame rate conversion (FRC) engine, which generates an interpolated image according to the reference image, the current image and a plurality of control parameters, wherein the FRC engine determines whether the number of the sums of absolute differences which are larger than a smallest threshold is equal to 1 or less than 1 when part of the sums of absolute differences is not larger than the smallest threshold, the current image comprises a good scene when the number of the sums of absolute differences which are larger than the smallest threshold is equal to 1 or less than 1, the current image comprises a periodic scene when the number of the sums of absolute differences which are larger than the smallest threshold is larger than 1, the FRC engine determines whether all of the sums of absolute differences are larger than an average pixel level (APL) when all of the sums of absolute differences are larger than the smallest threshold, the current image comprises a flash scene when all of the sums of absolute differences are larger than the APL, the current image comprises a bad scene when part of the sums of absolute differences is not larger than the APL, and the FRC engine adjusts at least one of the control parameters according to the good scene, the periodic scene, the flash scene or the bad scene.
1 Assignment
0 Petitions
Accused Products
Abstract
An image processing circuit and an image processing method are provided. The image processing circuit comprises a full search engine and a frame rate conversion (FRC) engine. The full search engine executes a full search to generate a sum of sum of absolute difference (SAD) distribution according to the reference image and the current image. The FRC engine analyzes a scene characteristic from the current image according to SAD distribution. The FRC engine adjusts at least one of the control parameters according to the scene characteristic. The FRC engine generates an interpolated image according to the reference image, the current image and the control parameters.
-
Citations
20 Claims
-
1. An image processing circuit, comprising:
-
a full search engine, which executes a full search to generate a sum of absolute differences (SAD) distribution according to a reference image and a current image, wherein the SAD distribution comprises a plurality of sums of absolute differences; and a frame rate conversion (FRC) engine, which generates an interpolated image according to the reference image, the current image and a plurality of control parameters, wherein the FRC engine determines whether the number of the sums of absolute differences which are larger than a smallest threshold is equal to 1 or less than 1 when part of the sums of absolute differences is not larger than the smallest threshold, the current image comprises a good scene when the number of the sums of absolute differences which are larger than the smallest threshold is equal to 1 or less than 1, the current image comprises a periodic scene when the number of the sums of absolute differences which are larger than the smallest threshold is larger than 1, the FRC engine determines whether all of the sums of absolute differences are larger than an average pixel level (APL) when all of the sums of absolute differences are larger than the smallest threshold, the current image comprises a flash scene when all of the sums of absolute differences are larger than the APL, the current image comprises a bad scene when part of the sums of absolute differences is not larger than the APL, and the FRC engine adjusts at least one of the control parameters according to the good scene, the periodic scene, the flash scene or the bad scene. - View Dependent Claims (2, 3, 4, 5)
-
-
6. An image processing circuit, comprising:
-
a full search engine, which executes a full search to generate a sum of absolute difference (SAD) distribution according to a reference image and a current image, wherein the SAD distribution comprises a plurality of sums of absolute differences; and a frame rate conversion (FRC) engine, which generates an interpolated image according to the reference image, the current image and a plurality of control parameters, and adjusts the plurality of control parameters according to the SAD distribution; wherein the FRC engine, in adjusting the plurality of control parameters according to the SAD distribution; determines whether the number of the sums of absolute differences that is larger than a smallest threshold is equal to 1 or less than 1 when part of the sums of absolute differences is not larger than the smallest threshold, and when the number of the sums of absolute differences that is determined to be larger than the smallest threshold is equal to 1 or less than 1, determines that the current image comprises a good scene the FRC engine and keeps the control parameters unchanged. - View Dependent Claims (7, 8, 9, 10, 11, 12)
-
-
13. An image processing method, comprising:
-
executing a full search to generate a sum of absolute differences (SAD) distribution according to a reference image and a current image, wherein the SAD distribution comprises a plurality of sums of absolute differences; analyzing a scene characteristic from the current image according to the SAD distribution; and generating an interpolated image according to the reference image, the current image and the control parameters; wherein the step of analyzing the scene characteristic includes; determining whether part of the sums of absolute differences is not larger than a smallest threshold; determining whether the number of the sums of absolute differences which are larger than the smallest threshold is equal to 1 or less than 1 when part of the sums of absolute differences is not larger than the smallest threshold; and determining that the current image comprises a good scene when the number of the sums of absolute differences which are larger than the smallest threshold is equal to 1 or less than 1. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
-
Specification