SU1179393A1 - Device for reading images - Google Patents

Abstract

1. A DEVICE FOR READING IMAGES Containing a transmitting cathode-ray tube, such as a superorticone, the deflecting system coils of which are connected to the outputs of frame generators and lines, the output of the superorticone is connected to one of the inputs of the analog-digital converter, the output of which is connected to the first input of the operational unit memory, key blocks, a write and read address counter, and a control unit, characterized in that, in order to improve the accuracy in reading images, it contains a pulse source optically coupled to the superorticone, the first and second delay elements and the adder, one of the inputs of which are the inputs for specifying the number of decomposition elements in the frame of the super orthonic, the other input of the analog-digital converter is connected to the nepBONry input of the control unit, the second and third outputs of which are connected to the second and the third inputs of the RAM block, the fourth and fifth entrances - with the control inputs of the row and column generators, the sixth output - with the input of the first delay element, the output of which It is connected to one of the inputs, the write address counter and the first key block, the seventh output of the control block is connected to another input of the read address counter and one of the inputs of the write address counter, the eighth output of the control block is connected to (L one of the inputs of the second key block, nine This control unit input is connected to the first input of the third key block, and the source of pulsed x-ray radiation is connected to the input of the control unit, the first output of which is connected via a second delay element with another with with the input of the write address counter, the output of which is connected to the fourth input of the RAM block, the fifth input of which is connected to the outputs of the first and third key block, and the output of the read address counter is connected to the other inputs of the first and second key block whose outputs are connected with other inputs of the adder, the output of which is connected to the second input of the third block. keys. 2. The device according to claim 1, characterized in that in it the control unit comprises a generator of shock excitation, an inverter,

Description

hence the first trigger, the differentiating element and the first shift register, one of the outputs of which is the first and second output of the block, the input of which is the input of the first trigger, the series of read decomposition elements, the first comparison circuit and the first zero-organ, and also the serially connected counter of the recorded image decomposition elements, the second comparison circuit, the second null organ, the row counter, the third comparison circuit, the third null organ, the frame counter, the fourth comparison circuit, the fourth null organ, the second trigger, the key, the second and third shift registers, the outputs of said registers are the third, sixth, eighth and ninth outputs of the block, the fourth and fifth outputs of which are, respectively, the outputs of the second, the third and fourth null organ, with the output of the first trigger connected to the control input of the shock excitation generator, the output of which is connected to the pulse inputs of the first, second and third shift registers, one of the outputs of which d nulorgana first inverter and the output connected to the corresponding inputs of the first shift register, one of whose outputs is connected to a corresponding input key, whose output is connected through an inverter to the input of the first shift register.

one

The invention relates to automation and computer technology and can be used in radiation introscopy for automatic processing of the results of translucency of products by a pulsed x-ray source.

The purpose of the invention is to increase accuracy when reading images.

FIG. 1 shows a block diagram of the device in FIG. 2 is a control block diagram.

The device contains (Fig. 1) a transmitting cathode-ray tube, for example, a super-orienton 1, whose deflection system contains horizontal 2 coils and vertical 3 deflections connected to row generators 4 and 5 frames, respectively, control unit 6, analog. a digital converter (ADC) 7, write 8 and read address 9 counters, an adder 10, three key blocks 11-13, two delay elements 14 and 15, and a random access memory 16. The target of the superorticon 1 is connected via the ADC 7 and the block 16 is connected to the first output of the device, the second input of the ADC 7 is connected to the first output 17 of the block and simultaneously through the delay element 14

ki and a record address counter 8 with a second input of block 16, the third and fourth inputs of which are connected respectively to the second 18 and third 19 outputs of block 6, the fourth 20 and fifth fifth outputs of which are connected to line 4 and frame 5 generators respectively. The sixth output 22 of block 6 is through delay element 15, the counter of addresses 9 and the first block 11 of keys is connected to the fifth input of block 16, to which the eighth output 24 of block 6 is connected to third block 12 of keys, summator 10 and second block 13 of keys. Seventh exit. 23 of the block 6 is connected simultaneously with the second inputs of the address counters of the record 8 and count 9. The ninth output 25 of the block 6 is connected to the second input of the third key block 12. The first input of the read address counter 9 is connected to the second input of the first key block 11, and the input of block 6 is connected to the clock output 26 of the pulsed x-ray source 27, which is connected to the object 28 and the second output 26 of the device.

The input 26 of the control unit 6 (Fig. 2) through the first trigger 29, the differentiating element 30, the first shift register 31, the key 32, the second shift register 33, the third shift register 34, the counter 35 of the read decomposition elements and the first comparison circuit 36 is connected to the input the first zero-body 37, the output of which is connected to the second input of the third shift register 34 and the first input of the first register 31. The second output of the register 31

is the first output 17 of block 6 and simultaneously through the counter 38 of the written decomposition elements, the second comparison circuit 39, the second nullorgan 40, the row counter 41, the third: the 42 comparison, the third zero body 43, the frame counter 44, the fourth comparison circuit 45, the fourth nullorgan 46 and the second filter 47 are connected with the second input of the key 32, the output through which the inverter is connected to the first input of the register 31. The shock excitation generator 48 is connected to the output of the first trigger 29, the output simultaneously to the third inputs of all the shift registers. The second input of the second shift register 33 is connected to the first input of the third register 34. The second output 18 of unit 6 is the third output of the first register 31, the third output 19 of unit 6 is the second output of the second register 33, the fourth output 20 and the fifth output 21 of unit 6 - the outputs of the second 40 and third 43 are zero-organo, respectively, the sixth output 22 is the first output of the second reg {1 33, the seventh output 23 of block 6 is the output of the fourth zero-organ 46, the eighth 24 and the ninth 25 outputs of block 6 are the first and second outputs third register 34 shift.

The second inputs of the first 36 and fourth 45 comparison circuits are supplied with constants equal to N, where N is the number of frames being analyzed, i.e. sample size in processing information. To the second input of the second comparison circuit 39, a constant K is applied, equal to the number of decomposition elements in the line. At the second input of the third comparison circuit 42, a constant n is applied equal to the number of lines in the frame.

The second input of the adder 10 is fed a constant (kl.), Equal to the number of decomposition elements in the frame of the Converter 49 and the lens 50 are located in front of the super orthicon 1.

The output of the key 32 is connected to the inverter 51. The output of the device is connected to the information processing unit 52, which is external to the device.

The device works as follows.

When the pulsed X-ray source 27 emits-penetrating radiation, the passage through the object 28 creates a shadow projection in the bremsstrahlung beam, which in converter 49 is converted into a light image and projected further onto the target of the superorticone 1 by means of an objective 50.

The synchronization pulse from the source 27 through the output 26 enters the control unit 6 and initiates the operation of the entire device. It sets in one state the trigger 29, which opens the loop in the generator 49 of shock excitation. At the same time, a differentiated leading edge (differentiating element 30 is entered into the first shift register 31. The closest impulse from the 48 generator is the unit advancing to the second output of register 31 and through output 17 initiates a sample of the ADC count 7. Converted into a binary code, the decomposition element brightness is supplied to the information input of the RAM block 16. Simultaneously with the synchronization of the sampling sample, the signal of the second output of the register 31 is fed to the counter 38 decomposition elements recorded in block 16 .V of the operati memory adds a unit to the content (before starting work with power on, all blocks must be reset to the initial state) and through the first delay element 14 to the first input of the write address counter 8. The output of the counter 8 is connected to the address buses of block 16. At this address, the signal received in block 16 from the third output of shift register 31 via bus 18 will write the count to block 16. If the first block of N frames is written to block 16, the second trigger 47 is in the zero state a poet key 32 will not miss signal for reading information from the block 16 and the inverter 51 will bring the unit back to the register 31, thereby

I will initiate a new reference record. When K samples will be rewritten, a sync pulse is outputted at output 20, after registration of N lines at output 21 a frame synchronization impulse is generated. After recording the first N frames, trigger 47 starts and opens the key 32, skidding one in the second shift register 33. The same pulse on output 23 resets the write and read addresses to zero. The next impulse from generator 48 initiates an increase in the read address by two (even addresses) at output 22 and using delay element 15, and the next impulse of generator 48 at output 19 will be used to read the first reference from the first line from block 16 to output and then to input block 52 information processing or in a computer. The next should be read the countdown corresponding to the luminance of the first element of the first line in the second frame. Adree of its location in block 16 is equal to the address of the first element of the first frame plus (2K n), where K is the number of elements (samples) in a line, n is the number of lines in a frame. Therefore, the next pulse of the generator 48 will record the unit in the third shift register 34, and then cause a pulse to appear at the output 24, which through the second key block 13 supplies the address of the read count to the first input of the adder 10, there is a constant at the second input (2K -P). From the output of the adder 10 through the third block 12 keys, the result will be sent to the address buses of the block 16 by the generator 48 JIO output 25. Then the next generator 48 by the output 19 initiates the reading of the corresponding reference to the information processing unit 52 (or to the computer input). The same read pulse is counted by a counter 35, which compares the result with the value of N (sample volumes). After counting N samples in the described manner, the output signal of the zero-body 37 resets the third register 34 and enters the unit in the first register 31. Now the next generator pulse 48 initiates the selection of a new reference in the ADC 7.

The described cycle repeats until the number of recorded elements equals the number of elements in the frame. After that, from the output of the third null-organ 43, flip-flop 29, which will be triggered only by the next radiation pulse at the output 26, resets.

Thus, the samples, successively arriving at the information processing unit 52 (or in the computer), correspond to the luminance of the elements at successive points in time. This will allow the automatic processing of information, thereby increasing its effectiveness with respect to the sensitivity and probability characteristics of image analysis.

Claims (2)

1. DEVICE FOR READING IMAGES, containing a transmitting cathode ray tube, for example, a superorthicon, the deflecting system coils of which are connected to the outputs of the frame and line generators, the output of the superorthicon is connected to one of the inputs of the analog-to-digital converter, the output of which is connected to the first input of the RAM block , blocks of keys, a counter of write and read addresses and a control unit, characterized in that, in order to improve accuracy when reading images, it contains a pulse X-ray source radiation, optically coupled to a superorthicon, the first and second delay elements and an adder, one input of which is the input of the number of decomposition elements in the frame of the superorthicon, the other input of an analog digital converter is connected to the first input of the control unit, the second and third outputs of which are connected to the second and the third inputs of the RAM block, the fourth and fifth inputs - with the control inputs of the row and column generators, the sixth output - with the input of the first delay element, the output of which is connected to one of the inputs, the counter of write addresses and the first block of keys, the seventh output of the control unit is connected to another input of the counter of read addresses and one of the inputs of the counter of write addresses, the eighth § the output of the control unit is connected to one of the inputs of the second block of keys, the ninth input of the control unit connected to the first input of the third block of keys, and the source of the pulsed x-ray radiation is connected to the input of the control unit, the first output of which is connected through the second delay element to another input of the address counter records, the output of which is connected to the fourth input of the RAM block, the fifth input of which is connected to the outputs of the first and third block of keys, and the output of the counter of read addresses is connected to other inputs of the first and second block of keys, the outputs of which are connected to other inputs of the adder, the output of which is connected to the second input of the third block of keys. 2. The device according to claim 1, characterized in that the control unit comprises a shock excitation generator, an inverter, according to SU 1179393, therefore, a first trigger, a differentiating element and a first shift register are connected, one of the outputs of which is the first and second output of the block, the input of which is the input of the first trigger, the sequentially connected counter of the read image decomposition elements, the first comparison circuit and the first zero-organ, as well as the series-connected counter of the recorded image decomposition elements , A second comparison circuit, the second nulorgan, a line counter, a third comparison circuit, the third nulorgan, the frame counter, a fourth comparator circuit, a fourth nulorgan _t the second trigger, the key, the second and third shift registers, the outputs of the mentioned registers are respectively the third, sixth, eighth and ninth outputs of the block, the fourth, fifth and seventh outputs of which are respectively the outputs of the second, third and fourth zero-organ, and the output of the first the trigger is connected to the control input of the shock excitation generator, the output of which is connected to the pulse inputs of the first, second and third shift registers, one of the outputs of which, the output of the first zero organ and the inverter output the corresponding inputs of the first shift register, one of the outputs of which is connected to the corresponding input of the key, the output of which is connected through the inverter to the input of the first shift register.