IMAGE PROCESSING DEVICE AND METHOD

• US 20180205967A1
• Filed: 08/24/2016
• Published: 07/19/2018
• Est. Priority Date: 08/24/2015
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Original Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Inventors: KIM, Sung-Oh, PARK, Hyun-Hee, KIM, Kwang-Young, LEE, Yong-Man
• Granted Patent: US 11,051,042 B2
• Time in Patent Office: Days
• CPC Class Codes: H04N 19/103 Selection of coding mode or of prediction mode
• CPC Class Codes: H04N 19/117 Filters, e.g. for pre-processing or post-processing sub-band filter banks H04N19/635
• CPC Class Codes: H04N 19/124 Quantisation
• CPC Class Codes: H04N 19/132 Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
• CPC Class Codes: H04N 19/14 Coding unit complexity, e.g. amount of activity or edge presence estimation H04N19/146 takes precedence
• CPC Class Codes: H04N 19/146 Data rate or code amount at the encoder output
• CPC Class Codes: H04N 19/176 the region being a block, e.g. a macroblock
• CPC Class Codes: H04N 19/46 Embedding additional information in the video signal during the compression process H04N19/517, H04N19/68, H04N19/70 take precedence
• CPC Class Codes: H04N 19/59 involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution
• CPC Class Codes: H04N 19/80 Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation H04N19/635, H04N19/86 take precedence

Abstract

Various embodiments of the present disclosure relate to an image processing device and method for compressing and restoring an image. To this end, edged information and scaling information are obtained from an input signal, and block information employed for obtaining the edged information and the scaling information is generated. In addition, encoding information is transmitted according to a preset transmission format so as to include the edged information, the scaling information, and the block information.

Claims

1. A device comprising:

a encoding module that obtains edged information and scaling information from an input signal and generates block information employed for obtaining the edged information and the scaling information; and

a transmission module that transmits encoding information according to a predetermined transmission format by which the encoding information includes the edged information, the scaling information, and the block information.

2. The device of claim 1, wherein the encoding module obtains the scaling information from the input signal on the basis of information employed for obtaining the edged information.

3. The device of claim 2, wherein the information employed for obtaining the edged information includes encoding mode information and block size information.

4. The device of claim 3, wherein the encoding module filters the input signal on the basis of a predetermined bandwidth, down-scales the filtered input signal to obtain the scaling information, and generates information used for the filtering and the down-scaling as the block information.

5. The device of claim 4, wherein the encoding module subtracts the filtered input signal from the input signal to obtain the edged information.

6. A device comprising:

a reception module that receives encoding information according to a predetermined format; and

a decoding module that obtains edged information, scaling information, and block information from the encoding information, and generates a source signal from the edged information on the basis of the obtained scaling information and block information.

7. The device of claim 6, wherein the decoding module up-scales the obtained scaling information by using the block information and generates the source signal by using a signal obtained by the up-scaling, the block information, and the edged information.

8. An encoding method comprising:

obtaining edged information and scaling information from an input signal;

generating block information employed for obtaining the edged information and the scaling information; and

transmitting encoding information according to a predetermined transmission format by which the encoding information includes the edged information, the scaling information, and the block information.

9. The encoding method of claim 8, wherein the scaling information is obtained from the input signal on the basis of the information employed for obtaining the edged information.

10. The encoding method of claim 9, wherein the information employed for obtaining the edged information includes encoding mode information and block size information.

11. The encoding method of claim 10, wherein the obtaining comprises:

filtering the input signal on the basis of a predetermined bandwidth; and

down-scaling the filtered input signal to obtain the scaling information.

12. The encoding method of claim 11, wherein the generating corresponds to generating information used for the filtering and the down-scaling as the block information.

13. The encoding method of claim 12, wherein the edged information is obtained by substracting the filtered input signal from the input signal.

14. A decoding method comprising:

receiving encoding information according to a predetermined format;

obtaining edged information, scaling information, and block information from the encoding information; and

generating a source signal from the edged information on the basis of the obtained scaling information and block information.

15. The decoding method of claim 14, wherein the generating of the source signal includes:

up-scaling the obtained scaling information by using the block information; and

generating the source signal by using a signal obtained by the up-scaling, the block information, and the edged information.