Apparatus for encoding image
A coding and encoder technology, applied in image communication, television, electrical components, etc., can solve the problems of reduced compression efficiency and increased bit amount, and achieve the effect of improving efficiency
Active Publication Date: 2013-09-11
SK TELECOM CO LTD
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Therefore, the amount of generated bits increases and the compression efficiency decreases
Also, when the encoder additionally encodes the information of the predicted motion vector to reduce the differential motion vector, the amount of bits required to encode the additional information increases, resulting in lower compression efficiency
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[0038] Various aspects of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, the same elements will be denoted by the same reference numerals although shown in different drawings. Also, in the following description of the present disclosure, descriptions of known functions and configurations incorporated herein will be omitted when it would make the subject matter of the present disclosure more unclear.
[0039] Also, in the description of the components of the present disclosure, words like first, second, A, B, (a) and (b) will be used. These are only for distinguishing one component from another without implying or suggesting the nature, sequence or sequence of the components. If one component is described as being "connected" or "coupled" to another component, they can mean that the component is not only directly "connected" or "coupled", but also indirectly "connected" or "coupled" through a t...
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An apparatus for encoding images is disclosed. The apparatus includes: a predictor for determining present motion vector of a present piece, and generating a prediction piece according to the determined present motion vector; a subtractor for generating residual piece through using the present piece to delete the prediction piece; a converter for converting the residual piece; a quantizer for quantizing the converted residual piece; and an encoder for encoding the quantized residual pieces, determining a prediction motion vector from one or more motion vector prediction candidates, encoding difference motion vectors obtained through using a present motion vector to delete the determined prediction motion vector, generating bit stream comprising encoded residual pieces and encoded difference motion vectors, and outputting the bit stream. The encoder generates and encodes prediction candidate recognition marks, and includes the marks in the bit stream. The marks are used for recognizing motion vector prediction candidates determined to be the prediction motion vector.
Description
[0001] This application is an invention patent application with the application number of 200980153379.7 and the application date of October 23, 2009, and the title of the invention is "the method and device for encoding motion vectors and the method and device for encoding / decoding images using the same". Divisional application. technical field [0002] The present disclosure relates to a method and apparatus for encoding motion vectors, and a method and apparatus for encoding / decoding images using the same. More particularly, the present disclosure relates to a method and apparatus for performing intra prediction using pixels reconstructed by encoding and decoding before a block currently to be encoded, effectively for motion vectors used for inter prediction. Encoding and decoding are performed, and data of a still image or video is encoded or decoded using the encoded or decoded motion vector. Background technique [0003] The statements in this section merely provide b...
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IPC IPC(8): H04N7/26H04N7/50
CPCH04N19/517H04N19/52H04N19/61H04N19/51H04N19/176H04N19/44H04N19/521H04N19/56
Inventor 金河润文柱禧李英烈金海光全炳宇金东元朴旻瞮
Owner SK TELECOM CO LTD