System and method for encoding and decoding using texture replacement

• US 7,606,435 B1
• Filed: 09/09/2002
• Issued: 10/20/2009
• Est. Priority Date: 02/21/2002
• Status: Active Grant

• Current Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Haskell, Barin Geoffry, Dumitras, Adriana
• Primary Examiner(s): Alavi; Amir
• Application Number:
  US10/237,488
• Time in Patent Office: 2,598 Days
• Field of Search: 382/108, 382/166, 382/190, 382/192, 382/199, 382/203, 382/204, 382/206, 382/232, 382/233, 382/243, 382/246, 382/254, 382/162, 382/164, 345/427, 345/582, 345/583, 345/587, 345/600, 345/605, 345/619, 345/689, 348/571, 375/240.24
• US Class Current: 382/243
• CPC Class Codes: G06T 11/001 Texturing; Colouring; Generation of texture or colour inpainting G06T5/77
• CPC Class Codes: H04N 19/119 Adaptive subdivision aspects, e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
• CPC Class Codes: H04N 19/147 according to rate distortion criteria rate-distortion as a criterion for motion estimation H04N19/567
• CPC Class Codes: H04N 19/17 the unit being an image region, e.g. an object
• CPC Class Codes: H04N 19/23 with coding of regions that are present throughout a whole video segment, e.g. sprites, background or mosaic

Abstract

The invention provides devices and methods that process images. The invention processes a received signal representing information of texture and information of an image, which has the texture removed from at least one region. The image information is encoded to obtain encoded information of the image. An output signal is generated representing the texture information and the encoded image information. In another embodiment, the invention synthesizes texture based on the received texture information, decodes received image information, which is encoded, to obtain a decoded image, and then maps the synthesized texture onto the decoded image.

Claims

1. A computer-implemented method for processing images having texture, the method comprising:

Using a processor to perform the following steps;

identifying similar texture regions in a video sequence;

extracting texture from the similar texture regions to obtain a video sequence with the texture removed and texture parameters wherein a resulting video sequence with texture extracted is represented by an equation in which a first background region is unmodified and a second background region is modified by texture extraction, wherein the texture parameters are represented by a reference value C*, which represents an extracted texture and a color; and

encoding the video sequence with the texture removed.

2. The computer-implemented to claim 1, further comprising outputting on a first channel the encoded video sequence and outputting on a second channel the texture parameters.

3. The computer-implemented of claim 1, wherein the encoding is performed using low bit-rate coding.

4. The computer-implemented of claim 1, wherein the video sequence is encoded using intra-coding, predicted coding or bidirectionally predicted coding based at lease in part on the texture.

5. The computer-implemented of claim 1, wherein encoding the video sequence occurs without the use of region shape parameters.

6. The computer-implemented of claim 1, further comprising:

encoding the texture parameters.