SU1531116A1 - Device for processing images of objects - Google Patents

Abstract

The invention relates to automation and computing and can be used in image processing systems. The purpose of the invention is to simplify the device. The device switchboard contains a group of EXCLUSIVE OR elements and a group of multiplexers, which allows to simplify the design of the code sorting unit. 1 hp ff, 4 ill.

Description

The invention relates to automation and computing, and can be used in image preprocessing systems.

The purpose of the invention is to simplify the device.

FIG. 1 shows a diagram of the device; in fig. 2 is a diagram of a switch; in FIG. 3 - block code sorting diagram; in fig. - Comparator of the code sorting unit.

The device contains a television sensor 1, analog-digital converter 2, aperture shaper 3, pulse generator k, register 5, switch 6, code sorting unit 7, device input 8, device output 9.

Switch 6 contains a group of elements EXCLUSIVE OR 10, a group of multiplexers 11, information input 12 of the block, control input of the block 13, output 1 of the block, the first input

the first element of the EXCLUSIVE OR group 15. The code sorting unit 7 contains comparators 16, registers 17. Comparator 1b of the code sorting unit (Fig. 4) contains a comparison circuit 18, multiplexer 19, inputs 20-22, outputs 23 and 2,

The device works as follows.

The luminance codes of the 3x3 aperture elements are sent to the information inputs of the switch 6. Previously, a mask is loaded into register 5 from device 8 input. Elements of the aperture that are not involved in the median filtering process in register 5 have a sign (L

SP

Ca

05

reading

and participating - value

logical o. Mask code arrives

to the input of the device mask selection. The EXCLUSIVE OR elements allow to divide the group of logical 1 input words into two parts. As a result, the logical logic codes 1 (maximum luminance codes) are formed at the outputs by the first part of logical 1 using multiplexers 11, and the logical codes O (minimum luminance codes) are formed by the second part. The remaining luminance codes, which correspond to the logical mask code in register 5, are transmitted to outputs I without change.

The brightness codes of the processing window are fed to the inputs of a code sorting unit consisting of nine parallel groups of comparators. In each comparator 1b, the comparison circuit 18 performs a pairwise comparison of the codes and the subsequent writing to the output registers of the multiplexers 19 codes according to the rule; the larger value of the luminance codes of the inputs to inputs 20 and 21, according to the standard impulse from the synchronization input, is written to the register from outputs 23, the smaller from the outputs. Register 17 delays the luminance codes by one cycle. In block 7, the code sorting is carried out by parallel-sequential comparison and sorting of luminance codes. The first group of comparators performs parallel processing of the luminance codes of the current aper

tours received from block 3 through switch 6 in this cycle. The second group of comparators processes the luminance codes of the aperture of the previous cycle, etc. The total information delay at the output of block 7 is equal to the number of parallel groups of comparators. Block 7 has a truncated structure due to the unbiased estimation of the median. Starting with the sixth, all other parallel groups of comparators have a smaller number of components, namely: the number of kommparatory is reduced by six, and the delay registers by four.

Claims (2)

Invention Formula 1 o A device for processing images of objects, containing a pulse generator, the output of which is connected to the synchronization input of the television Q 5 d 5 0 five 0 five 0 five a zonal sensor, the output of which is connected to the information input of the analog-digital converter, the output of which is connected to the information input of the aperture generator, the register, the input of which is the input of the device mask, the synchronization inputs of the analog-digital converter and the aperture generator, and A switch, characterized in that, in order to simplify the device, the control input of the code sorting unit is connected to the output of the pulse generator, the output of the code sorting unit the output of the device, and the switch contains a group of EXCLUSIVE OR elements, and a group of multiplexers, the first input of the first element EXCLUSIVE OR of the group is an input of the choice of the median element of the device, the output of the previous element EXCLUSIVE OR of the group is connected to the first input of the subsequent element EXCLUSIVE CEE OR groups and with the first control input of the group multiplexer, the second inputs of the elements EXCEPTING OR groups and the second control inputs of the group multiplexers are connected to the outputs of the register, the first and the second swarm data inputs of the multiplexers are connected to the group output of the aperture, the third and fourth inputs are connected to the inputs of the logical device units and zero, and the outputs of the multiplexers are connected with the group sorting information input block codes. 2. The device according to claim 1, wherein the code sorting unit comprises N groups of comparators, where N is the aperture size, and a group of registers, the information inputs of the comparators of the first group and the input of the first register of the group are information inputs of the block, the output of the last comparator is the output of the block, the outputs of the comparators of the previous group and the previous register of the group are connected to the inputs of the comparators of the subsequent group and the subsequent register of the group, respectively, the synchronization inputs of the comparators and registers are connected with control input of the unit. Exit 3