Novel Intra-Prediction Framework for H.264 Video Compression using Decision and Prediction Mode (original) (raw)

Fast Intra Prediction Mode Decision for H.264/AVC

IEICE Transactions on Information and Systems, 2010

In this letter, we present a simple but efficient intra prediction mode decision for H.264/AVC. Based on our investigation, the DC mode appears to be the superior prediction mode among the various candidates. We propose an intra-mode decision algorithm where the DC mode is chosen as a candidate for the best prediction mode. By experimental results, on average, the proposed algorithm significantly saves 81.905% of the entire encoding time compared to the H.264 reference software; besides, it reduces negligible peak signal-to-noise ratio (PSNR) values and slightly increases bitrates.

Efficient H.264 Intra Frame CODEC with Best Prediction Matrix Mode Algorithm

2020

The continuous growth of smart communities and ever-increasing demand of sending or storing videos, have led to consumption of huge amount of data. The video compression techniques are solving this emerging challenge. However, H.264 standard can be considered most notable, and it has proven to meet problematic requirements. The authors present (BPMM) as a novel efficient Intra prediction scheme. We can say that the creation of our proposed technique was in a phased manner; it's emerged as a proposal and achieved impressive results in the performance parameters as compression ratios, bit rates, and PSNR. Then in the second stage, we solved the challenges of overcoming the obstacle of encoding bits overhead. In this research, we try to address the final phase of the (BPMM) codec and to introduce our approach in a global manner through realization of decoding mechanism. For evaluation of our scheme, we utilized VHDL as a platform. Final results have proven our success to pass bottl...

Multi-Mode Schema for an Efficient Intra-Frame Prediction Technique for H.264

With an increasing adoption of H.264 in advance multimedia application, it is still important to understand the depth of this coding standard. Although by adopting H.264, it is ensured that compression of heavier multimedia files is done by eliminating spatial as well as temporal redundancies in order to conform to the standard, but it is also important that such video standard should ensure an efficient intra-frame coding mechanism. Therefore, the proposed system discusses about a technique that performs a simulation test-bed to evaluate Intra-frame prediction mechanism using H.264. The proposed system was also evaluated with multiple mode of selection of intra-frame prediction on various macroblock. A standard dataset is considered for evaluating the effectiveness of the proposed technique. Compression ratio and PSNR were chosen as the parameters to evaluate the performance.

Optimized Inter Prediction for H.264 Video Codec

International Journal of Electronics and Telecommunications

High definition video transmission is one of the prime demands of modern day communication. Changing needs demand diverse features to be offered by the video codec standards, H.264 fits to these requirements for video compression. In this work, an attempt has been made to optimize the inter prediction along with improved intra prediction to ensure the minimal bit rates thereby reduction in the channel bandwidth, which is required in most of the wireless applications. In intraprediction, only DC prediction mode is chosen out of 9 modes with 4*4 luma blocks that reduces the coding complexity towards optimal logic utilization in order to support typical FPGA board for hardware implementation. Most significantly, Inter prediction is carried out utilizing the M9K blocks efficiently with proper timing synchronization to reduce the latency in the encoding operation. Experimental set up comprising of two Altera DE2-115 boards connected through Ethernet cable demonstrated the video transmission. These optimized intra prediction and inter prediction stages resulted in significant improvement in the video compression possessing good subjective quality and increased video compression

High Speed Intra Prediction Scheme for H.264/AVC

IEEE Transactions on Consumer Electronics, 2007

In this paper, a novel pipelined intra prediction scheme with prediction mode scheduling is proposed to design H.264/AVC video encoder for high-definition TV (HDTV) applications such as HD camcorder. Since the intra prediction of the current 4×4 block cannot be performed before the reconstruction of a previous 4×4 block, intra 4×4 prediction cannot be pipelined for high speed implementation. By rearranging the encoding order of intra 4×4 prediction, the proposed scheme can be pipelined while maintaining consistency with the standard. In order to further increase the hardware utilization, the prediction order of the nine intra 4×4 prediction modes is scheduled depending on the required pixels to generate the predicted images. With the proposed scheme, the intra 4×4 prediction can be pipelined, and the bubble between the blocks can be decreased without the performance degradation. Since the processing time is reduced by up to 41%, it can save the hardware resource. Thus, the proposed scheme can be a good solution for realtime HD sized encoding applications 1 .

Performance evaluation of a new efficient H.264 intraprediction scheme

TURKISH JOURNAL OF ELECTRICAL ENGINEERING & COMPUTER SCIENCES, 2016

The paper presents a new efficient H.264/AVC 4 × 4 intraprediction scheme. The new prediction scheme is based on the best prediction matrix mode. The main idea behind the new prediction scheme is to combine the most usable intraprediction modes, {vertical-horizontal-DC} , into a new efficient prediction mode. The new prediction scheme is implemented using VHDL and hence it uses the full advantages of inherent parallelism in the hardware. We evaluate the performance of this prediction scheme in terms of compression ratio, peak signal to noise ratio, and bit rate using seven video sequences. Moreover, we analyze the power consumption, the delay, and FPGA area utilization of the implemented H.264 encoder after utilizing the new prediction scheme. The performance measures as well as the area and power consumption are compared to other best known prediction algorithms.

SELECTION OF INTRA PREDICTION MODES FOR INTRA FRAME CODING IN ADVANCED VIDEO CODING STANDARD

This paper proposes selection of Intra prediction modes for Intra frame coding in Advanced Video Coding Standard using Matlab. The proposed algorithm selects prediction modes for intra frame coding. There are nine prediction modes are there to predict the intra frame in AVC using Intra prediction,but all the prediction modes are not required for all the applications. Intra prediction is the first process of advanced video coding standard. It predicts a macro block by referring to its previous macro blocks to reduce spatial redundancy,appling all the prediction modes to predict intra frame it leads to more computational complexity is increased at the encoder of AVC. In the proposed algoriyhm, applied all the prediction modes(0-8) for prediction of intra frame but only few modes such as mode0, mode1, mode2,mode4,mode6 gives good PSNR, high comprssion ratio and low bit rate. Out of these modes mode2 gives good PSNR, compression ratio and redced bit rate, mode5, mode7 and mode8 gives lower PSNR, low compression ratio and increased bitrate compared to mode0,mode1, mode2, mode4 and mode6. The simulation results are presented using Matlab. The PSNR , compressed ratio and bit rate achived for different quantization parameters of mother daughter frames , foreman frames was presented.

Fast Intra-Prediction Mode Decision in H.264 Advanced Video Coding

2006 10th IEEE Singapore International Conference on Communication Systems, 2006

H.264/AVC, the latest video standard, adopts rate-distortion optimization (RDO) technique to obtain the best intra-and interprediction, while maximizing visual quality and minimizing the required bitrate. However, the full RD cost calculation for all intra-prediction modes, the exhaustive searches for finding optimal motion vectors for all block sizes, and the multiple references frame procedure considerably increase its computational complexity with the allowed number of prediction modes. In order to reduce the complexity, here we propose a new approach for both inter-and intra-mode decisions, that takes into account the two effective parameters, image content type and the quantization parameter. The proposed fast intra-prediction mode selection strategy uses some observations on the interior and the exterior MB properties to select a subset of candidate modes at different quantization parameters. Also, the fast inter-prediction mode decision approach uses split/merge procedure based on correlation of motion vectors and motion details of video objects. Also, here we use a context-based adaptive method to speed up the multiple reference frames motion estimation that is based on inter-and intra-prediction residues and quantization parameters. As such, only a subset of inter-and intra-modes is chosen for RDO calculation. Experimental results show that the proposed algorithm, reduces the total encoding cost with negligible loss in PSNR and a slightly increase in the required bitrate, when compared to RDO and other fast algorithms reported in the literature.

VHDL Realization of Efficient H. 264 Intra Prediction Scheme based on Best Prediction Matrix Mode

International Journal of Computer Applications, 2013

This paper introduces a VHDL realization of a new efficient intra prediction scheme that aims to enhance the compression efficiency of the H.264 standard. The new proposed algorithm is called Best Prediction Matrix Mode (BPMM). The main idea behind the new prediction scheme is to combine the most usable intra prediction modes, {vertical -horizontal -DC}, into a new efficient prediction mode. The performance of the new proposed prediction scheme with respect to compression ratio, Peak Signal to Noise Ratio (PSNR) and bit rate is evaluated. The results show that the BPMM enhances the compression ratio and correspondingly the bit rate and it noticeably increases the PSNR.