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Inter frame

About: Inter frame is a research topic. Over the lifetime, 4154 publications have been published within this topic receiving 63549 citations.


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Patent
11 Oct 2001
TL;DR: In this article, a method of streaming video data includes providing a plurality of frames to be transmitted from a video transmitter system (302) to a video receiver system (304), where the plurality is categorized into a reference frame and a prediction frame.
Abstract: A method of streaming video data includes providing a plurality of frames to be transmitted from a video transmitter system (302) to a video receiver system (304). The plurality of frames are categorized into a reference frame and a prediction frame. The reference frame is encoded (306) for transmission (120) to the video receiver system (304) using a zero run coding method. The encoded reference frame is transmitted (120) to the video receiver system (304). The prediction frame is divided into a plurality of blocks. The plurality of blocks are examined to determine whether any of them needed to be transmitted to reproduce the prediction frame of acceptable quality at the video receiver system (304). Only the blocks that have been determined necessary to reproduce the prediction frame of acceptable quality at the video receiver system (304) are transmitted (120) to the video receiver system (304) and displayed (314).

17 citations

Patent
30 Nov 2005
TL;DR: In this article, an apparatus for motion estimation of video data is presented, which includes a sum of absolute difference (SAD) calculating unit that receives video data and calculates an SAD for each frame of the video data, a motion vector calculating unit which divides video data into macroblocks or sub-macroblocks having a predetermined size, and a motion updating unit which performs motion estimation on video data using SAD calculated by the SAD calculating unit.
Abstract: Provided is an apparatus for motion estimation of video data. The apparatus includes a sum of absolute difference (SAD) calculating unit which receives video data and calculates an SAD for each frame of the video data, a motion vector calculating unit which divides each frame of the video data into macroblocks or sub-macroblocks having a predetermined size and calculates a motion vector estimation value using motion vectors or prediction vectors of macroblocks or sub-macroblocks adjacent to each macroblock or sub-macroblock, and a motion updating unit which performs motion estimation on the video data using an SAD calculated by the SAD calculating unit for the macroblocks or the sub-macroblocks adjacent to each macroblock or sub-macroblock having the predetermined size and the motion vector estimation value of the motion vector calculating unit.

17 citations

Book ChapterDOI
01 Jan 1992
TL;DR: This paper addresses the problem of motion-compensated up-conversion of digitized motion pictures at 24 frames per second to 60 frames persecond digital video signals.
Abstract: Frame rate conversion facilitates visual information exchange among systems employing various different frame rates for storage, transmission and display of image video signals. Motion pictures have a temporal rate of 24 frames per second, while most of the conventional video displays and recording devices utilize a rate of 60 fields per second. In the case of high-definition television (HDTV) systems, some proposals in the US require a video rate of 60 frames per second. Up-conversion of motion picture film to 60 frames per second is of importance because programs recorded on motion picture film can be used as high-quality source material for HDTV. In this paper, we address the problem of motion-compensated up-conversion of digitized motion pictures at 24 frames per second to 60 frames per second digital video signals.

17 citations

Patent
29 May 2002
TL;DR: In this article, a basic frame memory is used to store a predicted P-picture, which is stored in the accumulated frame memory storing a sum of said prediction frame and a de-compressed difference signal.
Abstract: Each of a transmit side and a receive side has a basic frame memory which stores a basic frame, and an accumulated frame memory which stores a predicted P-picture. An I-picture is inter-frame compressed by taking difference between the current input I-picture and a basic frame stored in the basic frame memory. An input P-picture is inter-frame compressed by taking difference between the current input P-picture and a prediction frame which is stored in the accumulated frame memory storing a sum of said prediction frame and a de-compressed difference signal. An I-picture which does not take difference from a previous frame but a fixed basic frame is inserted in every predetermined P-pictures so that a compression errors of P-pictures is not accumulated large. An I-picture may be substituted by a plurality of intra-slices which shifts one by one so that they cover a whole frame. The difference for compression may be taken either for each frame, or for each macroblock in a frame. A motion compensation can be combined with the above compression system.

17 citations

Patent
20 Dec 2007
TL;DR: In this paper, a method for encoding and decoding a motion picture frame near an Instantaneous Decoding Refresh-I (IDR-I) frame was proposed, which achieved natural picture conversion of frames near an instantaneous decoding refresh-I frame.
Abstract: Provided is a method for encoding and decoding a motion picture frame, which achieve natural picture conversion of frames near an Instantaneous Decoding Refresh-I (IDR-I) frame. The decoding method includes: decoding a first frame which is a P frame that is to be displayed last among a plurality of P frames that are to be displayed before an IDR-I frame is displayed; decoding the IDR-I frame; decoding a second frame which is a P frame that is to be displayed first among a plurality of P frames that are to be displayed after the IDR-I frame is displayed; and maintaining a reference frame stored in a buffer, for decoding the first frame until the second frame is decoded. Therefore, by allowing frames near an IDR-I frame to access reference frames stored in a buffer, natural picture conversion is possible, and accordingly smooth picture conversion without flickering is possible.

17 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202324
202272
202162
202084
2019110
201897