By Peter W. Hawkes (Eds.)
Advances in Imaging & Electron Physics merges long-running serials--Advances in Electronics & Electron Physics and Advances in Optical & Electron Microscopy. The sequence good points prolonged articles at the physics of electron units (especially semiconductor devices), particle optics at low and high energies, microlithography, photograph technology and electronic picture processing, electromagnetic wave propagation, electron microscopy, and the computing tools utilized in most of these domain names.
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Figure 36 shows four different time instances and the corresponding delta values. Program for Laplacian using A-increment: initpd ldi pd REPEAT st ro generate delta value in rl . r3,r4. r l l ) Idi pd UNTIL COUNT= 256 The function add( ) adds the 3-bit number rl . r3 to the 8-bit number r 4 . rl1 and store the results in r4 . r 11. The word-length of the final value has been set to 8 bits. The input data are stored in 1-0,the delta value in r1 . rj, and the final value in r4 . Y 1 1 . 41 NEAR-SENSOR IMAGE PROCESSING FIGURE36.
42. FIGURE41. Region of interest. SPEs in shaded area are selected. 46 ANDERS ASTROM AND ROBERT FORCHHEIMER (a) (b) (c) FIGURE 42. Different regions-of-interest patterns. The vertical line in Fig. 42a is achieved with the following program. clr a FORi=OTOn-1 setrx i IF Pattem[i] = 1 THEN and rx ELSE andi rx END-IF END-FOR st a,ro ; Store mask in ro Here, the Pattern[i] is a bit vector that defines the position of the column. For instance, if we want to use column 34, the vector Pattern will look like [O, 1, 0, 0, 1, 0, 0, 01.
COUNT outputs the number of set bits. Using NSIP syntax this procedure can be described as: initpd REPEAT Idi pd UNTIL COUNT < > 0 ifill a answer: = COUNT ; Initialize the photodiode ; Load accumulator with inverse value of output ; Fill to the right The “initpd” statement precharges the voltage over the photodiodes in the array to U O . The “ldi pd” instruction loads the inverted values of the photodiode comparator into the accumulator. Thus, zeroes will be loaded as UO Uref X + X + I acc: After lfill - I I ) 1 r COUNT (C) FIGURE10.
