SU1633435A1 - Device for measuring length of image contour sections - Google Patents

Abstract

The invention relates to automation and computing technology and can be used to build devices for measuring geometric parameters in parallel optoelectronic image processing systems. The purpose of the invention is to increase the speed and enhance the function of the flax vc function of the tronone by determining the angle between The image edges are connected by using sequentially unbroken photo electric converters with optical inputs and outputs in the device. Others turned on a discrete goal and providing image slices as well as AND elements, threshold elements and optical registers. Image datum lines. In the arithmetic unit, the perimeter of the photoelectric conversion is increased. aunt in the form of matrices of hesitctronic rfs of ec which allow to carry out parallel processing of optical information and i 10 (L

Description

The invention relates to automation and computing and can be used to build devices for measuring geometric parameters in parallel optoelectronic image processing systems.

The aim of the invention is to increase the speed and expansion of the functional capabilities of the device by determining the angle between the right edges of the image contour.

Fig. 1 is a diagram of a device for measuring the length of image contour sections, Fig. 2 is a diagram of optoelectronic cells of two adjacent rows of a photoelectric converter, Fig. 3 is a functional diagram of an arithmetic unit, Fig. 4 is a functional diagram of a threshold element,

FIG. 5 is a functional optical recorder circuit.

The device contains the following parameters: Li, L 1L where “360 / q and niai discretization at the para turn, arithmetic current 2, n photoelectric converters 3 |, 3j, 3" output in vi; e arrays of electrical cells of the dimension where the dimension of the image being processed, with the optical inputs and outputs of the cells forming, respectively, the optical input i and the output of the converter and the threshold elements 44 4 equipped with information outputs and optical registers bbb Converters 3 | -5 3, the IKK is distributed to the ibc of the ju-ib-but on the O1 axis of the passage through the center and the fire is turned on 1 by one ipvia by an angle (f Optical in and i about no i ic

OS CO

from 00 SL

the converter is connected from the optical one to the third input 16

Kim output of the previous, turned control of the converter 3.

compared with him at a discrete angle Lf, the Arithmetic unit 2 (Fig. 3) contains optical outputs of cells 7 of the right edge. K. n-t controlled keys 34 |, 342

it has a column of all converters 3 on-5, 34 and a converter 35 current-code (PTC), which are tically connected to the optical inputs whose first output is connected to the bus 36

the corresponding threshold elements 4 ipitani, and the second - to the combined first electrical outputs of the controlled keys 34, the second electrical outputs of which are connected to the common bus, and control the optical inputs 9 of the corresponding optical registers 6, the outputs of which are connected to the inputs 10 of the arithmetic unit 2 Control outputs 11 each of each of 10 key inputs 34 are connected to the corneous element 4 connected to the second corresponding inputs 10 of the block 2. The inputs of the corresponding elements And 1; The threshold element 4 (FIG. 4) contains the first Which are connected to the primary keys 37 | ,, 37m, the PTK 38 and to the control input 12 of the device, and the outgoing generator 39, the control input of which is connected to the first inputs 13 of the control 15 to the first PTC output of the corresponding photovoltaic transformers, and the output to the control output

20

distributors 3, the second control inputs 14 of which are connected to the second input 15 of the device, and the third inputs 16 of the converters 3 are connected to the third input) 17 of the control device; The control inputs 18 of the optical 1 h are connected to the information wired 5 threshold elements 4

Each row of converter 3 (Fig. 2) contains m optoelectronic cells 7, each 25 and n which contains a transistor 19, the base ia of which is connected to the anodes of the first and third photodiodes 20 and 21, to the cathode of the first decoupling diode 22, the anode of which is connected to the anode of the second 11 threshold element 4, the second PTC output is connected to its information output 5, the first electrical output of the PTC 38 is connected to the power supply bus 40, and the second to the first electrical outputs of the keys 37, the second outputs of which are connected to the common bus, and the control optical inputs keys 37 are optically coupled to the optical inputs 8 of the threshold element 4.

The optical register 6 (FIG. 5) contains triggers 411.4b, 41t, the information inputs of which are the information inputs 9 of register 6, and the synchronous inputs of all the triggers 41 are combined and connected to

photodiode 23, and the cathode

the fourth photodiode 24, the anode of which is connected to the common bus and to the emitter of the transistor 19, the collector of which is connected to the cathodes of the first and second light diodes 23 and 26, the anode of the first LED

to the cathode 30 to the input 18 of the control register 6

The device operates as follows. The initial image of the figure is projected onto the first photoelectric converter 3i, and a high

The IKUK 25 is night to the cathode of the third photo- 35 positive potential, which enters diode 21 and to the power bus 27, the cathodes of the second photodiodes 2.3 of all odd cells 7 are connected to the output of the first amplifier 28, the input of which is connected to the inverted output of the counting trigger 29 The counting input of which is connected to the first control input 13 of the converter 3, and the cathodes of the second photodiodes 23 of all even cells 7 are connected to the output of the second amplifier 30, the input of which is connected to the forward output of the tripod 29, and the first LED 25 45 of each cell 7 is optically connected with tr tim photodiode 21 own cell 7 and optical output transducer 3, a second LED 26 - to a second photodiode 23 subsequent cell 7

em to the third inputs 16 of the transducer control 3 Cell 7 is excited, which receives an optical signal. After a time interval from the outputs of the first transducer 3 | the image is projected onto the second transducer 32, rotated by an angle Lf and t d, and after time n-t, an image is formed on the last 3 "transducer

Thereafter, a high positive potential is supplied to the second control input 15, which is fed to the second control inputs 14 of the converters 3, and a zero potential is supplied to the third control input 17. The first potential 12 of the control with the fourth photodiode 24 of the previous 50 does not reach the unit potential, step 7, and the first photodiode 20 is the optical input of the converter 3, with the anode of the second LED 26 connected to the output of the third amplifier 31, the input of which is connected to the second control input 14, and the cathode of the first photodiode 20 connecting The cathode of the second decoupling diode 32, the anode of which is connected to the output of the fourth amplifier 33, is digging input to the first inputs of the And 1 elements, whose second inputs receive shift pulses from the control outputs II of the threshold elements 4 With the outputs of the elements And 1 shift pulses 55 to the first inputs 13 of the control photoelectric converters 3.

From the moment a high positive potential arrives at the second input 15

They are connected to the common bus, and the control inputs of the keys 34 are connected to the corresponding inputs 10 of block 2. Threshold element 4 (FIG. 4) contains t keys 37 | ,,, 37m, PTK 38 and control generator 39, control input It is connected to the first output of the PTK 38, and the output to the control output

The key inputs 34 are connected to the corresponding inputs 10 of block 2. Threshold element 4 (FIG. 4) contains m keys 37 ,, ,, 37m, PTK 38 and a control generator 39, the control input of which is connected to the first output of the PTK 38, and the output to the control output

11 of the threshold element 4, the second output of the PTC is connected to its information output 5, the first electrical output of the PTC 38 is connected to the power bus 40, and the second to the first electrical leads of the keys 37, the second leads of which are connected to the common bus, and the control optical inputs of the keys 37 are optically coupled to the optical inputs 8 of the threshold element 4.

The optical register 6 (FIG. 5) contains triggers 411.4b, 41t, the information inputs of which are the information inputs 9 of register 6, and the synchronous inputs of all the triggers 41 are combined and connected to

control register input 18

The device operates as follows. The initial image of the figure is projected onto the first photoelectric converter 3i, and a high

positive potential that act

em to the third inputs 16 of the transducer control 3 Cell 7 is excited, which receives an optical signal. After a time interval from the outputs of the first transducer 3 | the image is projected onto the second transducer 32, rotated by an angle Lf and t d, and after time n-t, an image is formed on the last 3 "transducer

After that, a high positive potential is supplied to the second control input 15, which is fed to the second control inputs 14 of the converters 3, and a zero potential is supplied to the third control input 17. A single potential that goes to the first inputs of the And 1 elements is fed to the first control input 12, the inputs of which receive shift pulses from the control outputs of the II threshold elements 4 of the outputs of the elements And 1 shift pulses arrive at the first inputs 13 of the control of the photoelectric converters 3.

From the moment a high positive potential arrives at the second input 15

device control, the right edge of the projected image is separated in each photoelectric converter 3, and with the arrival of a high positive potential at the first control input 12, the edge of the image in each converter starts shifting to the right

At the point in time when the excited cells 7 appear in the extreme right

converters column 3, with their optical

The optical outputs 8 and 9 of the corresponding threshold elements 4 and optical registers b receive light, and the shear pulses are generated at the control outputs 11 of the threshold elements 4 and, therefore, the corresponding image shift stops.

The number of excited cells 7 in the rightmost column of converter 3 is counted and recorded in the optical register 6 if at its control input 18 from the information output 5 of the threshold element 4 there is a single potential. If the number of single signals at the outputs of the cells 7 of the extreme column of the converter 3 is greater than one, then a single signal is generated at the information output 5 of the threshold element 4. In the case of the absence of a single potential at the control input 18, the optical register 6 does not perform any actions zvodit

The number of discrete cells counted in the optical registers, in the form of codes of corresponding numbers, is fed to the inputs 10 of the arithmetic unit 2, in which they are summed.

Thus, in the arithmetic unit 2, at the end of the measurement, there will be a result of measuring the length of the entire contour of the image, if the image contains only straight edges, and in the registers

6 |,, 6 "there will be results of measuring individual sections of the contour, and if a single signal is formed at the information output 5 of the threshold element 4 In the absence of a single potential at the control input 18 of the optical register 6, no action is taken

The number of discrete cells counted in optical registers, in the form of codes of corresponding numbers, is fed to the inputs 10 of the arithmetic unit 2, in which it is summed

Thus, in the arithmetic unit 2, at the end of the measurement, there will be a measurement result of the length of the entire contour of the image, if the image contains only straight edges, and in the registers 6i,, 6L there will be results of measurement of individual sections of the contour, and if on the information output 5

five

ten

15

20 25 30

35

40

45

0

five

the threshold element 4 will be a single potential, then in the corresponding register 6 is fixed the length of the ssvyatvuyushchuyuyu right edge of the image

The number equal to the number of information outputs 5 between two adjacent excited information outputs 5 (on which there are single potentials) corresponds to the angle between these direct segments of the image

Cell 7 photoelectric converters 3 operate as follows (Fig 2)

A single potential is supplied to the third control input 16, which is amplified by a fourth amplifier 33, i.e. a high positive potential is present at the cathodes of the first photodiodes 20 cells 7

An optical signal is transmitted through the optical inputs to the first photodiodes 20. The transistor 19 of the corresponding cell 7 opens due to the presence of a positive potential at its base. The corresponding first LED 25 operates and supplies the optical signal of the connection realized on the third photodiode 21, the transistor 19 remains open

To shift the recorded right edge of the image to the right, zero potential is applied to the input 16, a high positive potential is supplied to the second control input 14, amplified by the third amplifier 31 and fed to the anodes of the second LEDs 26, and the shift of the recorded image is sent to the first control input 13

All excited cells 7 have been wrapped, except for the right extreme excited cell 7 in each row. This is achieved by optical communications from the second LEDs 26 to the fourth photodiodes 24 of the previous cells 7 in each row.

Counting trigger 29 switches Amplifiers 28 and 30 amplify signals from its outputs If a single potential is present at the forward output of counting trigger 29, odd cells will be in the excited state 7 With the arrival of the subsequent pulse, trigger 29 switches, that is, to its right A zero potential appears at the output, and a single potential appears on the inverse, and even cells 7 are excited due to the optical communication from the second LED 26 of the previous cell 7 with the second photodiode 23 of the last cell 7

Thus, the right-right excited cells 7 are shifted in each row to the right to excite cells 7 in the right-most column. Splitting diodes 22 and 32 protect cells 7 from false quenching or excitation.

The arithmetic unit 2 works as follows (Fig. 3).

Each key 34 in the open state consumes a certain equal amount of current flowing from the electrical output through the key 34 itself via its second output (to the common bus). The magnitude of the current of such a key 34 corresponds to one division of the PTC 35, through which the total number of currents of all excited keys 34 flows from the power bus 36:

R

L 2 L,

where A is the current flowing through PTK 35; /, - the current flowing through one open

ty key 34; R - the number of public keys (RK)

The threshold element 4 (Fig. 4) works as well as block 2 (Fig. 3), but the PTK 38 operates in a single normal code (the number of single signals at the outputs of the PTC 38 corresponds to the number of single signals at the inputs of element 4).

If one key 37 is turned on, then at the first output of the NTK 38 a single signal appears, which is fed to the control input of the generator 39, at the output 11 of which the formation of pulses stops. On the other outputs of the PTC 38 in this case there are zero signals. If two or more keys 37 are opened, then on the second, and so on, outputs of the PTC 38, single signals appear. Accordingly, the formation of pulses at the output 1 1 is stopped.

Optical register 6 operates as follows (Fig. 5).

At the initial moment of time at the outputs of the flip-flops 41 there are zero potentials. With the arrival of a single signal at the control input 18, the triggers 41 transition either to the single state or to the zero state, depending on the signal present on its information input 9.

If a single signal (light) was present at the information input 9, then the trigger 41 goes into a single state (a single signal is output at the output). If the zero signal (no light), then to the zero state, i.e., the flip-flops 41 are D-flip-flops with optical information inputs.

High speed device due to the use of photovoltaic cells in. the form of matrices of opto-electronic cells that allow production

0

50

the parallel processing of optical information, which on average reduces the measurement time by an order of magnitude.

The extended functionality of the device is conditioned by the ability to rotate the image at a given angle, measure the full perimeter of the image and its individual lengths, and measure the angle between the right edges of the image in order to recognize its shape.

Claims (1)

Invention Formula A device for measuring the length of the image contour sections, containing an arithmetic unit, And elements and a photoelectric converter, whose input is the optical input of the device, characterized in that, in order to increase speed and expand the functionality of the device by determining the angle between the straight edges image contours, threshold elements, optical registers, and n-1 consecutive photoelectric converters are introduced, where / AF, AF is the sampling step of rotation, the photoelectric converter is made in the form of matrices of optoelectronic cells, each of the cells is optically connected with the neighboring cells of the matrix row, and the optical outputs of the last cells of all rows of the matrix are connected to the optical inputs of the corresponding threshold elements and the optical inputs of the corresponding optical registers whose outputs are connected to the corresponding inputs of the arithmetic unit, and their control inputs to the information outputs of the corresponding threshold elements, the control outputs of which They are connected to the second inputs of the corresponding elements And, the first inputs of which are connected to the first control input of the device, the first control inputs of optoelectronic cells of all matrices are connected to the outputs of the corresponding elements And, the second and third control inputs of the optoelectronic cells of all matrices are connected respectively to the second and third control inputs device, each matrix of optoelectronic cells rotated by an angle αf with respect to the previous one, the optoelectronic cells of which are optically connected with the corresponding subsequent cells. and 9EfrЈC9l /about ° Г7П - “43, 111 LI ri, g J FIG 4 W 4i 4in