Statistics based fast intra mode detection

Garg, Rahul; Jindal, Munish; Chauhan, Monika

doi:10.1117/12.633389

Cited by 7 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Fast intra mode decision algorithms using edge detection histogram and local edge detection were proposed in [3], [4]. Also, there exist fast algorithms using statistics-based methods such as [5]. Most of these algorithms speed up the encoding time, but result in slight PSNR degradation, because those cannot always decide the best mode.…”

Section: Introductionmentioning

confidence: 99%

A fast Intra prediction mode decision algorithm for H.264/AVC

Kim

Lee

2009

2009 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)

View full text Add to dashboard Cite

Intra coding is used for reducing the spatial redundancy in video coding. H.264/AVC supports several MB (Macroblock) predictions for Intra coding. These Intra predictions have also several directional prediction modes, which significantly improve Intra coding efficiency, but increase the encoding complexity. In this paper, a fast Intra prediction mode decision algorithm is proposed for the H.264/AVC Intra coding. The proposed algorithm selects one representative prediction mode among all intra predictions using the existing DCT and quantization schemes of H.264/AVC, and only the representative mode is used for RDO (Rate Distortion Optimization) process. The experimental results show that the proposed algorithm achieves an encoding time saving of 64% with negligible loss of PSNR (Peak Signal-to-Noise Ratio).

show abstract

Section: Introductionmentioning

confidence: 99%

A fast Intra prediction mode decision algorithm for H.264/AVC

Kim

Lee

2009

2009 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)

View full text Add to dashboard Cite

show abstract

“…To reduce the number of candidates, edge detection techniques are employed to decide the edge direction and the number of modes to investigate is reduced. Other methods to limit the number of candidates are based on filters [24], directional mask [25], intensity gradient [26], and statistical properties [27]. Limiting the number of candidates reduce the encoding time, however, the preprocessing to detect the edges and classify them requires the additional encoding time and reduces the coding efficiency.…”

Section: Introductionmentioning

confidence: 99%

A fast intra prediction method using Hadamard transform in high efficiency video coding

et al. 2012

View full text Add to dashboard Cite

For the higher coding performance than the previous video coding standards, high efficiency video coding (HEVC) adopts an angular intra prediction method, which requires heavy computational complexity due to the increased intra prediction modes. In this paper, we propose a fast intra prediction mode decision based on the estimation of rate distortion cost using Hadamard transform to reduce the number of intra prediction mode and early termination whether the current coding unit is splitted or not. The experimental results show that the proposed method reduces the computational complexity of intra prediction in HEVC and achieves similar coding performance to that of HEVC test mode 2.1

show abstract

“…An edge detection technique was employed in [15] to determine the edge direction, and, based on the direction, the number of candidate modes for the best mode was limited. Other approaches for limiting the number of candidates were based on filters [20], [21], a directional mask [22], the intensity gradient [23], and statistical properties [24]. Although these approaches reduce the encoding complexity, such preprocessing as detecting the edges or classifying their directional patterns requires an additional computational burden on the encoder.…”

Section: Introductionmentioning

confidence: 99%

A Fast Intra-Prediction Method in HEVC Using Rate-Distortion Estimation Based on Hadamard Transform

Kim¹,

Jun²,

Jung³

et al. 2013

ETRI J

View full text Add to dashboard Cite

A fast intra-prediction method is proposed for High Efficiency Video Coding (HEVC) using a fast intra-mode decision and fast coding unit (CU) size decision. HEVC supports very sophisticated intra modes and a recursive quadtree-based CU structure. To provide a high coding efficiency, the mode and CU size are selected in a ratedistortion optimized manner. This causes a high computational complexity in the encoder, and, for practical applications, the complexity should be significantly reduced. In this paper, among the many predefined modes, the intra-prediction mode is chosen without rate-distortion optimization processes, instead using the difference between the minimum and second minimum of the rate-distortion cost estimation based on the Hadamard transform. The experiment results show that the proposed method achieves a 49.04% reduction in the intra-prediction time and a 32.74% reduction in the total encoding time with a nearly similar coding performance to that of HEVC test model 2.1.

show abstract

Statistics based fast intra mode detection

Cited by 7 publications

References 0 publications

A fast Intra prediction mode decision algorithm for H.264/AVC

A fast Intra prediction mode decision algorithm for H.264/AVC

A fast intra prediction method using Hadamard transform in high efficiency video coding

A Fast Intra-Prediction Method in HEVC Using Rate-Distortion Estimation Based on Hadamard Transform

Contact Info

Product

Resources

About