Tham khảo tài liệu 'dynamic vision for perception and control of motion - ernst d. dickmanns part 2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | What Type of Vision System Is Most Adequate 15 A few years ago many systems were investigated with single processors devoted to single pixels Connection Machine Hillis 1985 1992 Content-Addressable Associative Parallel Processors CAAPP Scudder Weems 1990 and others . The trend now clearly is toward more coarsely granulated parallel architectures. Since a single microprocessor on the market at the turn of the century is capable of performing about 109 instructions per second this means in excess of 2000 instructions per pixel of a 770 X 525 pixel image. Of course this should not be confused with information processing operations. For the year 2010 generalpurpose PC processors are expected to have a performance level of about 1011 instructions per second. On the other hand the communication bandwidths of single channels will be so high that several image matrices may be transferred at a sufficiently high rate to allow smooth recognition and control of motion processes. One should refrain from video norms presently dominating the discussion once imaging sensors with digital output are in wide use. Therefore there is no need for more elaborate data processing on the imaging chip except for ensuring sufficiently high intensity dynamics. Technical systems do not have the bandwidth problems which may have forced biological systems to do extensive data preprocessing near the retina from 120 million light sensitive elements in the retina to million nerves leading to the lateral geniculate nucleus in humans . Interesting studies have been made at several research institutions which tried to exploit analog data processing on silicon chips Koch 1995 future comparisons of results will have to show whether the space needed on the chip for this purpose can be justified by the advantages claimed. The mainstream development today is driven by commercial TV for the sensors and by personal computers and games for the processors. With an expected increase in computing power of
