Patent
Motion detector for video signals including a novel line comparison processing scheme
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TLDR
In this article, a motion vector suitable for motion-compensated prediction in an inter-frame differential video coder is derived by comparison of each block of a current frame and with shifted corresponding region of a previous frame with the regions of the previous frame.Abstract:
A motion vector suitable for motion-compensated prediction in an inter-frame differential video coder is derived by comparison of each block of a current frame and with shifted corresponding region of a previous frame with the regions of the previous frame. Rather than dealing with each block in turn, the apparatus carries out all comparisons involving a line n of the video signal before commencing comparisons involving n+p (where p is the number of lines encompassed by a block).read more
Citations
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Patent
Method and apparatus for determining motion vectors for image sequences
Andre Zaccarin,Bede Liu +1 more
TL;DR: In this article, a block-based motion estimation method is used to determine motion vectors for blocks of pixels in a current frame or field, where only a portion of blocks from a predetermined pattern of blocks in the current frame and field are searched for a match with a block of pixels from a previous frame and/or field over a designated search area.
Patent
Programmable architecture and methods for motion estimation
TL;DR: In this article, a programmable motion estimator includes one dual ported memory for storing an image block, the prediction error and a temporary block used in interpolation, and a pixel-group random access dual-port ported memory (PORAM) for storing a search window.
Patent
Interlaced video signal motion compensation prediction system
TL;DR: In this article, a coder with a motion estimation system, which comprises a same parity field motion estimator, a near field motion estimation, an inter-field interpolated motion estimators, a comparator for selecting the smallest one of prediction errors E1 to E3 output from the respective motion estimation systems, and a selector for selectively outputting a motion vector from the motion estimation providing the smallest prediction error.
Patent
Motion detection system
TL;DR: In this paper, a system for detecting motion in a video image is provided wherein the video image was processed into a statistical array in which the array elements are derived from overlapping portions of the image.
Patent
Motion vector detecting apparatus for moving picture
TL;DR: In this paper, a motion vector detection apparatus for a moving picture which can detect motion vector of a half pel accuracy at a high speed by pipeline processing is presented. But it is not suitable for the detection of human motion.
References
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Journal ArticleDOI
Correlation Techniques of Image Registration
TL;DR: An extension to the basic concept of correlation detection as a means of image registration is developed that utilizes the spatial correlation within each image and greatly improves the detectability of image misregistration.
Patent
Circuit implementation of block matching algorithm
Lancelot Wu,Kun-Min Yang +1 more
TL;DR: In this article, a circuit for implementing a full search block matching algorithm for coding video signals sequentially receives pixel values from a block of pixels in a current video frame and sequentially receive pixel values in a search area of a previous video frame.
Patent
Image coding and decoding device
TL;DR: In an image coding and decoding device, input digital image signals are divided into blocks of prescribed size, and coding processing is performed on differential signals taken between the input block signal and interframe forcasting signals thereby enabling efficient transmission to be performed as mentioned in this paper.
Patent
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TL;DR: In this paper, a system for displacement vector searching in digital image analysis is described, in which sub-totals of the amount differences in gray values for the pixel data of two images are calculated in parallel for more than one pair of pixels.
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Video signal compressing and coding apparatus
TL;DR: A video signal compression circuit for encoding a video signal to reduce the quantity of video information that is transmitted without loss of information is proposed in this article, where the video signal is decompressed to recover the original video signal from its compressed coded form.