Tầm quan trọng của các ứng dụng đa phương tiện Trồng IS Thấm gây ảnh hưởng hiện tại máy tính kiến trúc. Malthus, phần mở rộng mới có Been trong mục đích chung bộ vi xử lý nhằm khai thác các Subword song song (SIMD mô hình) Đó Xuất hiện Trong một số Các ứng dụng này [1], [2]. Ngoài ra, khả năng của bộ vi xử lý mới thiết kế, như vậy là VLIW và SMT, để khai thác song song ngũ cốc thô, tiền phạt xử lý đa phương tiện hiện nay IS Là nghiên cứu. | Chapter 3 Computer Architectures for Multimedia and Video Analysis Edmundo Saez University of Córdoba Spain Jose Gonzalez-Mora University of Malaga Spain Nicolas Guil University of Malaga Spain Jose I. Benavides University of Cordoba Spain Emilio L. Zapata University of Malaga Spain Contents Introduction .44 The Computing Architectures .46 Multimedia Extensions .46 Graphics Processing Units .47 Temporal Video Temporal Video Segmentation Algorithm. 50 Applying Multimedia Extensions to Temporal Video Segmentation . 52 Sum of Products . 52 Calculation of W1D . 52 Calculation of w2D . 52 1-D Convolution. 53 Gradients Magnitude. 53 Arctangent . 54 Performance of Multimedia Extensions . 56 Object Tracking in Video. 57 Mapping the Tracking Algorithm in GPUs . 60 GPU Performance with the Tracking Algorithm. 62 43 2008 by Taylor Francis Group LLC 44 High-Performance Computing in Remote Sensing Conclusions . 64 Acknowledgments . 65 References . 65 Multimedia processing involves applications with a high demanding computational power. New capabilities have been included in modern processors to cope with these new requirements and specific architectures have been designed to increase the performance of different multimedia applications. Thus multimedia extensions were included in general purpose processors to exploit the single-instruction multiple-data SIMD parallelism that appears in signal processing applications. Moreover new architectures such as Graphics Processing Units GPU are being successfully applied to general purpose computation GPGPU and specifically image and video processing. In this chapter we discuss the impact of the usage of multimedia extensions and GPUs in multimedia applications and illustrate this discussion with the study of two concrete applications involving video analysis. Introduction The growing importance of multimedia applications is
