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Residual frame

About: Residual frame is a research topic. Over the lifetime, 4443 publications have been published within this topic receiving 68784 citations.


Papers
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Patent
07 Aug 1996
TL;DR: In this article, a speech signal is divided into frames, each frame having a sound type, and a class is determined for each frame depending on the sound type of the frame.
Abstract: A speech signal divided into frames, each frame having a sound type, and a class is determined for each frame depending on the sound type of the frame. One of multiple filters is selected for each frame depending on the class of the frame. Each frame is filtered according to the filter selected, and the filtered frames combined to provide a filtered speech signal. The system includes filters and software.

20 citations

Journal ArticleDOI
Dongsan Jun1, HyunWook Park1
TL;DR: The PRFS method computes the priorities of all reference frames using spatial and temporal correlation of the reference frame index and motion vectors, and selects candidate reference frames to reduce the number of reference frames for each ME block.
Abstract: The H.264/AVC achieves higher coding performance than the previous video coding standards, such as MPEG-2 and MPEG-4. In order to achieve this improved coding performance, H.264 adopts various advanced techniques including multiple reference frame motion estimation (MRF-ME), which requires very heavy encoding complexity in proportion to the number of reference frames. In this letter, we propose an efficient priority-based reference frame selection (PRFS) method to reduce the computational complexity. The PRFS method computes the priorities of all reference frames using spatial and temporal correlation of the reference frame index and motion vectors, and selects candidate reference frames to reduce the number of reference frames for each ME block. Experimental results show that the proposed method reduces the computational complexity of the MRF-ME and achieves similar coding performance to that of previous methods.

20 citations

Patent
03 May 2007
TL;DR: In this paper, a motion estimation between the current image frame and the preceding one of the video sequence is performed to determine a jitter intended to be removed from the determined global motion parameters in order to remove unwanted motion(s) present in the image frame.
Abstract: A processing device (D) is dedicated to image frame stabilization of digital video sequences in an electronic equipment (El), such as a digital camera, for instance. This processing device (D) comprises processing means (PM) arranged, for each current image frame of a video sequence, for determining a type of motion present in the video sequence from global motion parameters of the current image frame and the ones of at least one preceding image frame of this video sequence. These parameters are determined from a motion estimation between the current image frame and the preceding one of the video sequence. The motion determination is followed by a selection of a jitter extraction technique amongst at least two jitter extraction techniques depending on this determined motion type. The jitter extraction technique thus chosen is used to determine a jitter intended to be removed from the determined global motion parameter(s) in order to remove unwanted motion(s) present into the current image frame.

20 citations

Patent
10 Dec 2008
TL;DR: In this article, a video stream over a bidirectional wireless channel between a video encoder and a video decoder is encoded by determining predictions (M) for defined partitions of the video frames, a prediction being based on at least one reference area of a reference frame of video stream; one motion vector associated to said reference area; and a weighting factor associated to the reference area, wherein the difference between partition and corresponding predicted partition is done to establish a partition residual.
Abstract: Process for delivering a video stream over a bidirectional wireless channel between a video encoder and a video decoder, wherein the video frames of the video stream are encoded by determining predictions (M) for defined partitions of the video frames, a prediction (M) being based on at least one reference area of a reference frame of the video stream; one motion vector associated to said reference area; and a weighting factor associated to said reference area; wherein the difference between partition and corresponding predicted partition (M) is done to establish a partition residual, the encoded video stream with partition residual are transmitted to the video decoder to decode predicted partition (M), decoded partition (A) of the video frame being formed by combination of decoded predicted partition and corresponding partition residual; and wherein a transmission error probability (PA) of the decoded partition A is fed back to the video encoder, said transmission error probability being used in the cost function (J) of the motion estimation algorithm of the decoded partition (A) as reference area.

20 citations

Patent
30 Nov 1984
TL;DR: In this paper, a video signal processing system which employs a frame memory having a single output is operated to provide both field and frame delayed signals, and the frame memory is operated in a serial mode at twice the video signal sample rate.
Abstract: A video signal processing system which employs a frame memory having a single output is operated to provide both field and frame delayed signals. The frame memory is operated in a serial mode at twice the video signal sample rate. Video samples are input to the memory on alternate stages and alternate samples output from the memory are routed back into the vacant memory stages. Alternate samples output from the frame memory correspond to field and frame delayed samples.

19 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202313
202223
20217
20204
20196
201811