Wael Badawy and Magdy Bayoumi, “A Multiplication-Free Algorithm and A Parallel Architecture for Affine Transformation,” The Journal of VLSI Signal Processing-Systems, Kluwer Academic Publishers, Vol. 31, No 2, May 2002, pp. 173-184.

The post A Multiplication-Free Algorithm and A Parallel Architecture for Affine Transformation appeared first on Dr. Wael Badawy.

Two VLSI architectures for the finite Radon transform are presented. The first is a reference architecture using memory blocks and the second is a memoryless architecture. The proposed architectures use 7×7 size image blocks and are prototyped for processing the CIF image sequence. The simulation and synthesis results show that the core speeds of the two proposed architectures are around 100 and 82 MHz, respectively.

C. A. Rahman and W. Badawy, “Architectures for Finite Radon Transform“, The IEE Electronics Letters, Vol. 40, Issue 15, July 2004, pp. 931-932.

The post Architectures for Finite Radon Transform appeared first on Dr. Wael Badawy.

Wael Badawy and Magdy Bayoumi, “Algorithm-Based Low Power VLSI Architecture For 2d-Mesh Video Object Motion Tracking,” The IEEE Transaction on Circuits and Systems for Video Technology, Vol. 12, No. 4, April 2002, pp. 227-237

The post Algorithm-Based Low Power VLSI Architecture For 2d-Mesh Video Object Motion Tracking appeared first on Dr. Wael Badawy.

This paper presents three Very Large Scale Integration prototypes to exploit spatial redundancy in the H.264 standard. The proposed architectures are: (1) forward 4 × 4 integer approximation of DCT transform and quantization, which is applied to all blocks of a frame, (2) the 4 × 4 Hadamard transform and quantization that is applied to the DC coefficients of the luma component when the macroblock is encoded in 16 × 16 intra prediction mode, and (3) the 2 × 2 Hadamard transform and quantization that is applied to the DC coefficients of the chroma component as a second level in the transformation hierarchy. The developed algorithms are adopted by the H.264 standard. A performance analysis shows that the architectures satisfy the real-time constraints required by different digital video applications.

I. Amer, W. Badawy, G. Jullien, “A Proposed Hardware Reference Model for Spatial Transformation and Quantization in H.264,” Elsevier Journal of Visual Communication and Image Representation, Volume 17, Issue 2, April 2006, Pages 533-552.

The post A Proposed Hardware Reference Model for Spatial Transformation and Quantization in H.264, appeared first on Dr. Wael Badawy.

Abstract

This brief presents a new context-based adaptive variable length coding (CAVLC) architecture. The prototype is designed for the H.264/AVC baseline profile entropy coder. The proposed design offers area savings by reducing the size of the statistic buffer. The arithmetic table elimination technique further reduces the area. The split VLC tables simplify the process of bit-stream generation and also help in reducing some area. The proposed architecture is implemented on Xilinx Virtex II field-programmable gate array (2v3000fg676-4). Simulation result shows that the architecture is capable of processing common/quarter-common intermediate format frame sequences in real-time at a core speed of 50 MHz with 6.85-K logic gates.

C. A. Rahman and W. Badawy, “CAVLC Encoder Design for Real-time Mobile Video Applications”, The IEEE Trans. on Circuits and Systems II, Oct. 2007 Vol 54, Issue: 10, pp. 873-877.
Link to the list of other Peer Journal Publications

The post CAVLC Encoder Design for Real-Time Mobile Video Applications appeared first on Dr. Wael Badawy.

Current multimedia design processes suffer from the excessively large time spent on testing new IP-blocks with references based on large video encoders specifications (usually several thousands lines of code). The appropriate testing of a single IP-block may require the conversion of the overall encoder from software to hardware, which is difficult to complete in the short time required by the competition-driven reduced time-to-market demanded for the adoption of a new video coding standard. This paper presents a new design flow to accelerate the conformance testing of an IP-block using the H.264/AVC software reference model. An example block of the simplified 8 × 8 transformation and quantization, which is adopted in FRExt, is provided as a case study demonstrating the effectiveness of the approach.

To Download A SIMPLIFIED 8 × 8 TRANSFORMATION AND QUANTIZATION REAL-TIME IP-BLOCK FOR MPEG-4 H.264/AVC APPLICATIONS: A NEW DESIGN FLOW APPROACH

Ihab Amer, Wael Badawy, Graham Jullien, Marco Mattavelli, And Robert Turney, “A Simplified 8×8 Transformation And Quantization Real-Time Ip-Block For Mpeg-4 H.264/Avc Applications: A New Design Flow Approach,” Journal of Circuits, Systems, and Computers Vol. 16, No. 6 (2007) 1011–1026

Link to the list of other Peer Journal Publications

The post A Simplified 8×8 Transformation And Quantization Real-Time Ip-Block For Mpeg-4 H.264/Avc Applications: A New Design Flow Approach appeared first on Dr. Wael Badawy.

Wael Badawy and Magdy Bayoumi, “A Multiplication-Free Algorithm and A Parallel Architecture for Affine Transformation,” The Journal of VLSI Signal Processing-Systems, Kluwer Academic Publishers, Vol. 31, No 2, May 2002, pp. 173-184.

The post A Multiplication-Free Algorithm and A Parallel Architecture for Affine Transformation appeared first on Dr. Wael Badawy.

Two VLSI architectures for the finite Radon transform are presented. The first is a reference architecture using memory blocks and the second is a memoryless architecture. The proposed architectures use 7×7 size image blocks and are prototyped for processing the CIF image sequence. The simulation and synthesis results show that the core speeds of the two proposed architectures are around 100 and 82 MHz, respectively.

C. A. Rahman and W. Badawy, “Architectures for Finite Radon Transform“, The IEE Electronics Letters, Vol. 40, Issue 15, July 2004, pp. 931-932.

The post Architectures for Finite Radon Transform appeared first on Dr. Wael Badawy.

Wael Badawy and Magdy Bayoumi, “Algorithm-Based Low Power VLSI Architecture For 2d-Mesh Video Object Motion Tracking,” The IEEE Transaction on Circuits and Systems for Video Technology, Vol. 12, No. 4, April 2002, pp. 227-237

The post Algorithm-Based Low Power VLSI Architecture For 2d-Mesh Video Object Motion Tracking appeared first on Dr. Wael Badawy.

This paper presents three Very Large Scale Integration prototypes to exploit spatial redundancy in the H.264 standard. The proposed architectures are: (1) forward 4 × 4 integer approximation of DCT transform and quantization, which is applied to all blocks of a frame, (2) the 4 × 4 Hadamard transform and quantization that is applied to the DC coefficients of the luma component when the macroblock is encoded in 16 × 16 intra prediction mode, and (3) the 2 × 2 Hadamard transform and quantization that is applied to the DC coefficients of the chroma component as a second level in the transformation hierarchy. The developed algorithms are adopted by the H.264 standard. A performance analysis shows that the architectures satisfy the real-time constraints required by different digital video applications.

I. Amer, W. Badawy, G. Jullien, “A Proposed Hardware Reference Model for Spatial Transformation and Quantization in H.264,” Elsevier Journal of Visual Communication and Image Representation, Volume 17, Issue 2, April 2006, Pages 533-552.

The post A Proposed Hardware Reference Model for Spatial Transformation and Quantization in H.264, appeared first on Dr. Wael Badawy.