Variable Frame Skipping Scheme Based on Estimated Quality of Non-coded Frames at Decoder for Real-Time Video Coding

Kuo, Tien-Ying

doi:10.1093/ietisy/e88-d.12.2849

Cited by 2 publications

(5 citation statements)

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“…A formalization of this problem can be found in [7] in the context of coding; here the authors eventually propose a scheme which is, however, not suitable for real-time transmission. Along the same direction [8] and [9] propose to select the transcoding parameters by minimizing a video distortion function, PSNR based, applied to both coded and not coded frames. The latter are reconstructed at the decoder by means of some kind of interpolation (the simplest one being the repetition of the last transcoded frame).…”

Section: Related Workmentioning

confidence: 99%

Variable frame rate control jerkiness-driven

Baroncini

Felice

Iacovoni

2008

J Real-Time Image Proc

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We are introducing a real-time variable frame rate control scheme capable of optimizing both spatial and temporal video qualities. It traces the motion of incoming video frames and automatically tunes the outgoing frame rate according to the level of jerkiness acceptable by the user. The control scheme was conceived within the framework of mobile communications, which require an optimum use of both the available bandwidth and terminal resources. We have designed and implemented a video transcoding architecture which supports our frame rate control. The transcoder has been developed at the Coritel laboratories, Rome, Italy (Coritel is a research consortium managed by Ericsson Lab, Italy, and the University of Rome La Sapienza), while the visual tests were carried out at the ISCOM laboratory, Italian Communication Ministry, Rome, Italy. The proposed transcoding architecture is compatible with the constraints of real-time communications and it has been extensively tested under a wide range of conditions. We then present a subjective assessment of our solution carried out in a fully equipped professional laboratory. Within this assessment a number of non-expert viewers were asked to express their preference when watching side by side the same video, coded at a variable frame rate and at a fixed frame rate. Results show that in most cases a variable frame rate control based on a dynamic bit/frame allocation scheme might substantially improve video quality perceived by viewers.

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Section: Related Workmentioning

confidence: 99%

Variable frame rate control jerkiness-driven

Baroncini

Felice

Iacovoni

2008

J Real-Time Image Proc

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“…When we use the frame skipping at the encoder side, skipped frames will be interpolated by using key frames at the decoder side. There are several methods to interpolate skipped frames such as repetition, bilinear interpolation, and motion compensated interpolation (MCI) [4], [5]. In this paper, we used an MCI-based method at the decoder side.…”

Section: Frame Interpolationmentioning

confidence: 99%

“…Therefore, it can reduce the jerky effect when the bitstream is decoded and interpolated. Several methods are proposed in VFS [2]- [4].…”

Section: Introductionmentioning

confidence: 99%

“…Kuo [4] proposed a VFS method that introduced interpolation in the encoding process. The results reported in [4] produced the better PSNR quality than conventional coding with no FS.…”

Section: Introductionmentioning

confidence: 99%

“…Kuo [4] proposed a VFS method that introduced interpolation in the encoding process. The results reported in [4] produced the better PSNR quality than conventional coding with no FS. In [4], the method is closely coupled with the encoding process targeted for low resolution and low bit rate applications.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Adaptive Key Frame Selection for Efficient Video Coding

Jun¹,

Lee²,

He³

et al.

Advances in Image and Video Technology

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Recently, many researches on frame skipping are conducted to reduce temporal redundancy in video frames. As a simple method, fixed frame skipping (FFS) adjusts frame rate by skipping frame at regular intervals. To overcome the poor performance of FFS, variable frame skipping (VFS) has been introduced to exploit the temporal dependency between frames. In this paper, scene-adaptive key frame selection method with low complexity is proposed. The proposed method performed about 20 percent better in complexity with the better visual quality than the conventional video encoding. As a preprocessing method, the proposed technology can be used with any conventional video codec.

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Variable Frame Skipping Scheme Based on Estimated Quality of Non-coded Frames at Decoder for Real-Time Video Coding

Cited by 2 publications

References 0 publications

Variable frame rate control jerkiness-driven

Variable frame rate control jerkiness-driven

Adaptive Key Frame Selection for Efficient Video Coding

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