Parallel architecture for a pel-recursive motion estimation algorithm

Frimout, Emmanuel; Driessen, J.N.; Deprettere, E.F.

doi:10.1109/asap.1992.218545

Cited by 3 publications

(4 citation statements)

References 7 publications

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“…In this case, the interpolation is made by using the information coming from the image block. A more complex approach has been used for defining a linear array of processors by Frimout et al [47].…”

Section: Pel-recursive Approaches (Pra's)mentioning

confidence: 99%

RETIMAC: REal-TIme Motion Analysis Chip

Nesi

Innocenti²,

Pezzati³

1998

IEEE Trans. Circuits Syst. II

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Motion estimation is relevant for applications of both motion-compensated image sequence processing and dynamic scene analysis of computer vision. Different approaches and solutions have been proposed for these two applicative fields. In some cases, parallel architectures and dedicated chips for motion estimation in real-time have been developed. In this paper, a low-cost REal-TIme Motion Analysis Chip, RETIMAC, is presented, which is suitable for dynamic scene analysis in computer vision applications. This chip is capable of estimating optical flow fields in real-time, and has been especially developed for project OFCOMP (Optical Flow for COunting Moving People) DIM 45 ESPRIT III MEPI. It can be profitably used also for autonomous navigation, tracking, surveillance, counting moving objects, measuring velocity, etc., and for several computer vision applications which require as a first processing step the estimation of the apparent velocity of each pixel in the image plane (e.g., optical flow, velocity field). RETIMAC implements a gradientbased solution which has been demonstrated to be more reliable and precise with respect to several solutions proposed in the literature.

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Section: Pel-recursive Approaches (Pra's)mentioning

confidence: 99%

RETIMAC: REal-TIme Motion Analysis Chip

Nesi

Innocenti²,

Pezzati³

1998

IEEE Trans. Circuits Syst. II

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“…When data are distributed among PEc, the data access mechanism is derived from the system proposed in [8]. A request manager is assigned to each PEc.…”

Section: Real-time Performancementioning

confidence: 99%

“…Pel-Recursive Algorithm (PRA) implementations are difficult to compare since they consider different algorithms and target different architecture styles. Brofferio et al [5] proposed a sequential architecture whereas Frimout et al [8] derived a systolic network. The Kim and Lee architecture [12] is a pipelined linear network of operators.…”

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confidence: 99%

Architectural Study of a Block-Recursive Motion Estimation Algorithm

1997

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“…Since the algorithms of the first group have acceptable performance and demand lower computational complexity they are commonly used in video compression standards. We can name pel recursive algorithm [2], affine based algorithm [3], mesh based algorithm [4] and block-based ME algorithms like [5][6][7][8][9][10][11][12][13][14][15] from the first category. In the block-based ME algorithms, the current frame is divided into non-overlapped blocks and a search window is defined in the reference frame.…”

Section: Introductionmentioning

confidence: 99%

A codirectionality assisted motion estimation algorithm

Soroushmehr

Samavi

Shirani

2012

20th Iranian Conference on Electrical Engineering (ICEE2012)

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Block-based motion estimation (ME) is the most computationally intensive part of a video encoder. In this paper a new genetic based search algorithm is proposed to speed up the process and find the best matching block. In the proposed method, the fitness function is compared with a predefined threshold to stop performing unnecessary computations. The initial population of the genetic algorithm is selected based on the spatial and temporal correlation among motion vectors. Considering the codirectionality among neighbouring vectors, we develop our algorithm. Since many blocks in a frame can be regarded as stationary or quasi stationary the suggested initial population involves these kinds of blocks. Simulation results on popular test video sequences indicate higher performance of the proposed algorithm compared to the latest fast motion estimation algorithm.

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Parallel architecture for a pel-recursive motion estimation algorithm

Cited by 3 publications

References 7 publications

RETIMAC: REal-TIme Motion Analysis Chip

RETIMAC: REal-TIme Motion Analysis Chip

Architectural Study of a Block-Recursive Motion Estimation Algorithm

A codirectionality assisted motion estimation algorithm

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