A custom DSP for feature extraction with a calculation capacity of >1 GMAC/s and low I/O bandwidth
Viktor Öwall, Mats Torkelson, Peter J. Egelberg · 1997
A customized processor for real time image convolution has been designed to increase the performance of an instrument for automated cereal grain quality assessment. Image convolution requires an extensive amount of calculation capacity hard to sustain with standard processors. Therefore, a tailored architecture with a calculation capacity surpassing that of TMS320C80 has been developed. A simplified system design is achieved with an on-chip pixel memory bank with reduce the amount of external data transfers. The processor achieves a calculation capacity of ?1G MAC/s at a clock frequency of 20MHz and has been designed for a Plessey gate array implementation. 1 Introduction An instrument for automated cereal grain quality assessment using digitized video images has been developed by AgroVision AB [1]. To enhance the performance of the instrument, feature extraction by using two-dimensional convolution of the digitized image is desired. The twodimensional convolution is computationally v...