Residual frame

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

Methods and systems for rate control in video encoder

Abstract: A method of rate control in a video encoder includes performing a first encoding step to encode macroblocks of a current frame by utilizing a first quantization parameter to thereby generate a residual signal for the current frame; estimating a number of header bits for each macroblock mode to thereby estimate a total number of header bits for the current frame; estimating an available number of texture bits according to the total number of header bits for the current frame; determining a second quantization parameter according to the estimated available number of texture bits; and performing a second encoding step to encode the residual signal for the current frame by utilizing the second quantization parameter.

Method and means for detecting foreign particles in liquid filled containers

Abstract: A liquid filled transparent container is spun momentarily and successive video frames are then taken by a camera while the liquid swirls in the stationary container. One or more of these video frames can be stored in memory in digitized form. Two or more digitized video frames are then compared electronically, by ''''subtracting'''' one from the other, to generate a reject signal when the ''''difference'''' exceeds some preset number of digitized pulses. The threshold voltage for the video frame being generated can be altered by reference to a stored video frame in order to increase the sensitivity of that frame at discrete points corresponding to voltages exceeding the threshold voltage in the stored frame and desensitized at all other points to reduce the likelihood of spurious signals.

Method and apparatus for adjusting parallax in three-dimensional video

Abstract: A method and apparatus for adjusting parallax of a three-dimensional (3D) video are provided. The method including receiving an input of a 3D video sequence; determining whether a scene transition occurs between a previous frame and a current frame of the 3D video sequence; if it is determined that the scene transition occurs between the previous frame and the current frame, determining and comparing first depth information of a previous scene which includes the previous frame and second depth information of a current scene which includes the current frame; and, based on a result of the comparing, selectively adjusting depth information of at least one of the frames of the previous scene and the frames of the current scene in consideration of a difference between the first depth information and the second depth information.

Error concealment in a video signal

Abstract: Apparatus and method for concealing an error in a frame of a video sequence, said video sequence comprising a plurality of frames and being encoded as at least two independently-coded signals (10a, 10b), each of which represents a sub-set of frames of the video sequence. The method comprises receiving said at least two signals (10a, 10b), identifying an error in a frame (P4) of the video sequence, and concealing the error by predicting corresponding data using at least one frame (P3, P5) which is encoded in a signal (10b) other than that in which the error is identified.

Method and apparatus to detect watermark that are resistant to resizing, rotation and translation

Abstract: A method and/or apparatus for detecting a watermark (100) in a two-dimensional frame of data (170). The method comprises the steps of: computing a filtered frame of data (200) from the frame of data having at least some harmonic frequency components corresponding to the watermark; computing a two-dimensional Fourier transform (204) of the filtered frame; selecting (206) a set of frequency components of the two-dimensional frequency spectrum; and computing (208) at least one of a rotation value, a resizing value, and a translation value associated with the watermark as compared to a reference watermark using one or more of the frequency components of the selected set.