Residual frame

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

Object tracking in video with visual constraints

Abstract: Embodiments of the present invention relate to object tracking in video. In an embodiment, a computer-implemented method tracks an object in a frame of a video. An adaptive term value is determined based on an adaptive model and at least a portion of the frame. A pose constraint value is determined based on a pose model and at least a portion the frame. An alignment confidence score is determined based on an alignment model and at least a portion the frame. Based on the adaptive term value, the pose constraint value, and the alignment confidence score, an energy value is determined. Based on the energy value, a resultant tracking state is determined. The resultant tracking state defines a likely position of the object in the frame given the object's likely position in a set of previous frames in the video.

Method and apparatus for high quality video motion adaptive edge-directional deinterlacing

Abstract: A method for deinterlacing video includes constructing a temporary frame of deinterlaced video based on a first (i.e., current) field of interlaced video, wherein the temporary frame includes pixels in lines of the temporary frame associated with the first field of interlaced video, placeholder pixels in identified areas of motion in lines of the frame associated with a missing field of interlaced video, and pixels from an opposite field of polarity of interlaced video in areas without motion. The method further includes replacing the placeholder pixels in the identified areas of motion with pixels interpolated using an edge direction interpolation scheme based on pixels in the first field of interlaced video, resulting in a reconstructed frame. In one example, a motion adaptive interpolator may construct the temporary frame, and an edge directional interpolator may generate the reconstructed/deinterlaced the frame.

Frame skip encoding apparatus for moving images

Abstract: In a moving image encoding apparatus, an image signal is converted into a digital image signal by an A/D converter and is stored in frame memory 110 In addition, a movement vector detector 300 detects a movement of the output of the frame memory 110 In an orthogonal transformer 130, a difference signal between a present frame image which is stored in the frame memory 110 and a previous frame image which is stored in a variable delay frame memory 210 is supplied, in which the difference signal is converted by orthogonal transformation The orthogonally transformed transformation signal is quantized into a linear or nonlinear discrete level on the basis of a step width of quantization from a step size controller 600 in a quantizer 140 Then, the quantized data is encoded into a variable length code in a variable length encoder 150 A movement vector detector 300 detects movement of the image by pattern matching processing between the present frame and the previous frame A movement vector/encoding mode judger 310 generates the movement vector 3 and the encoding mode 4 The variable length code is transmitted to the transmission circuit after adding a movement vector 3 and encoding mode 4 In these operations, a frame rate controller 700 controls the processing rate of each frame image in the entire apparatus Frame rate controller 700 calculates a total frame skip number S T which corresponds to the total number of frames that are not transmitted after a frame has been transmitted The total frame skip number S T is calculated by selecting a smaller sum of an externally set signal S min , signal S M which is calculated from the degree of movement compensation and S S which is calculated from the degree of quantization, and an externally set signal S max

Hybrid video coding

Abstract: A further coding efficiency increase is achieved by, in hybrid video coding, additionally predicting the residual signal of a current frame by motion-compensated prediction using a reference residual signal of a previous frame. In other words, in order to further reduce the energy of the final residual signal, i.e. the one finally transmitted, and thus increase the coding efficiency, it is proposed to additionally predict the residual signal by motion- compensated prediction using the reconstructed residual signals of previously coded frames.

Video signal frame search apparatus for selection of a desired frame

Abstract: A video signal frame search apparatus for selecting a frame from a video signal recorded on a magnetic tape, e.g. for supplying the frame to a video printer, is based on a system controller which controls playback and rewind operations of a VTR during a frame search operation. When a desired frame is displayed during such a frame search operation, actuation of a switch by the user causes a plurality of frames adjcent to and including the desired frame to be stored in a memory and then displayed simultaneously, enabling the user to specify to the system controller the precise position of the desired frame.