Topic
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•
19 Feb 2003TL;DR: In this paper, a method and apparatus for performing frame rate conversion is presented, where current video data and previous video data are compared with each other and a motion vector is detected based on the compared result; an error in the detected motion vector was compensated for based on adjacent motion vectors.
Abstract: Provided are a method and apparatus for performing frame rate conversion. With the apparatus, current video data and previous video data are compared with each other and a motion vector is detected based on the compared result; an error in the detected motion vector is compensated for based on adjacent motion vectors; and one of the detected motion vector and a compensated motion vector is selected as a final motion vector, based on errors in the detected and compensated motion vectors. Accordingly, a more reliable motion vector can be selected to perform frame rate conversion, thereby more naturally depicting an image.
19 citations
Patent•
06 May 2009
TL;DR: In this paper, a system and method for video frame interpolation is described, which consists of receiving first motion estimation data representing estimated motion of blocks between a first frame and a second frame, receiving second motion estimations representing estimated moving blocks between the second frame and the third frame, determining whether an area in an interpolated frame between the first and second frame is an occlusion area based at least in part on the first estimation data, and estimating characteristics of pixels of the area based on the determination.
Abstract: A system and method for video frame interpolation are disclosed. In one embodiment, the method comprises receiving first motion estimation data representing estimated motion of blocks between a first frame and a second frame, receiving second motion estimation data representing estimated motion of blocks between the second frame and a third frame, determining whether an area in an interpolated frame between the first and second frame is an occlusion area based at least in part on the first and second motion estimation data, and estimating characteristics of pixels of the area based in part on the determination.
19 citations
Patent•
IBM1
TL;DR: In this paper, a method and system for real-time processing of a sequence of video frames is presented, where a current frame in the sequence and at least one frame occurring prior to the current frame is analyzed.
Abstract: A method and system for real time processing of a sequence of video frames. A current frame in the sequence and at least one frame in the sequence occurring prior to the current frame is analyzed. Each frame includes a two-dimensional array of pixels. The sequence of video frames is received in synchronization with a recording of the video frames in real time. The analyzing includes performing a background subtraction on the at least one frame, which determines a background image and a static region mask associated with a static region consisting of a contiguous distribution of pixels in the current frame. The static region mask identifies each pixel in the static region upon the static region mask being superimposed on the current frame. The background image includes the array of pixels and a background model of the at least one frame and does not include any moving object.
19 citations
27 Apr 1993
TL;DR: An interframe differential coding scheme is presented for LSFs that is computationally efficient and easy to implement, and can be used in low-bit-rate vocoders.
Abstract: In many vocoders LSFs (line spectrum frequencies) are used to encode the linear predictive coding (LPC) parameters. An interframe differential coding scheme is presented for LSFs. The LSFs of the current speech frame are predicted by using both the LSFs of the previous frame and some of the LSFs of the current frame. Then the difference vector resulting from prediction is vector quantized. The proposed scheme is computationally efficient and easy to implement, and can be used in low-bit-rate vocoders. >
19 citations
TL;DR: An emission process that is able to fit different activity measurements for VBR video sources characterized by a predefined bit-rate probability density function is introduced and is demonstrated that the process introduced here can model faster motion within a scene than a single autoregressive Markov process.
Abstract: Variable bit-rate (VBR) video sources are significantly characterized by the statistics of ‘scene changes’, which determine the activity exhibited by the pictures. In a source coded with an interframe technique, in fact, this characteristic is related to the length of the emission periods having a very high bit-rate. It therefore represents a fundamental feature in evaluating performance of a network supporting video traffic. In this paper an emission process that is able to fit different activity measurements for VBR video sources characterized by a predefined bit-rate probability density function is introduced. Such a process is based on a suitable linear combination of continuous state autoregressive Markov processes. It is analyzed with respect to its capability to match the actual values of some temporal parameters which have been introduced to characterize the source. Its modeling power is compared with that of a single autoregressive Markov process. In particular is demonstrated that the process introduced here can model faster motion within a scene than a single autoregressive Markov process. Finally a case study is introduced to point out the flexibility of the proposed process.
19 citations