SU642881A1

SU642881A1 - Image signal selecting device

Info

Publication number: SU642881A1
Application number: SU752095909A
Authority: SU
Inventors: Станислав Евгеньевич Каширин; Юрий Федорович Коркунов
Original assignee: Предприятие П/Я А-1772
Priority date: 1975-01-07
Filing date: 1975-01-07
Publication date: 1979-01-15

Description

Изобретение отиоситс к телевидению и может быть использовано при построении аппаратуры дл анализа изображеиий.The invention is adapted to television and can be used in the construction of equipment for image analysis.

Известно устройство дл селекции сигнала изображеик , содержащее телевизиоииыЯ датчик, блок дл измерени видеосигналов , блок пам ти, одновибраторы разрешени и запрещени измерений, схемы совпадени , инвертор и селектор видеосигнала выбранной фигуры, включающий запоминающую электронио-лучевую трубку и элемент ИЛИ (}.A device for selecting an image signal is known, comprising a television sensor, a unit for measuring video signals, a memory unit, one-off measurement resolution and prohibition vibrators, a matching circuit, an inverter and a video selector of a selected figure, including an electron-beam storage tube and an OR element (}.

Однако известное устройство обладает малой разрешающей способностью и невысокой скоростью-выделени выбранного изображени .However, the known device has a low resolution and low speed-selection of the selected image.

Наиболее близким по технической сущности к данному изобретению вл етс устройство дл селекции сигнала изображени , содержащее последовательно соединенные телевизионный датчик, селектор видеосигнала и регистратор, а также блик пам ти (2.The closest to the technical essence of this invention is a device for selecting an image signal comprising a series-connected television sensor, a video signal selector and a recorder, as well as a glint of memory (2.

Это устройство селектирует сигнал изображени одного только объекта за один кадр, что при анализе пол , содержащего большое количество объектов, ведет к значительным затратам времени.This device selects the image signal of only one object per frame, which, when analyzing a field containing a large number of objects, leads to a considerable investment of time.

Целью изобретени вл етс повы 11ение быстродействи устройства.The aim of the invention is to improve the speed of the device.

Дл этого в устройство дл селекции сигнала изображени , содержащее последовательно соединенные телевизионный датчик , селектор видеосигнала и регистратор, а также блок пам ти, введены блок селекции, блок совпадени , триггер и формирователь сигнала, причем вход блока селекции подключен к выходу телевизиониого датчика, а выход блока селекции подключен к первомуFor this purpose, a selection unit, a matching unit, a trigger and a signal conditioner were input into a device for selecting an image signal containing a series-connected television sensor, video selector and recorder, as well as a memory block, the input of the selection block connected to the television sensor output, and the output block selection is connected to the first

входу блока совпадени , к второму входу которого подключен выход блока пам ти, вход которого подключен к выходу блока совпадени , третий вход которого подключен к выходу триггера, выход блока совпадени подсоединен к второму входу селектора видеосигнала и первому входу триггера, ври этом выход селектора видеосигнала подсоединен к входу формировател сигнала, выход которого подключен к второму входу регистратора и второму входу триггера.the input of the match block, to the second input of which the output of the memory block is connected, the input of which is connected to the output of the match block, the third input of which is connected to the trigger output, the output of the match block is connected to the second input of the video signal selector and the first input of the trigger signal, the output of the video signal selector is connected to the input of the signal conditioner, the output of which is connected to the second input of the recorder and the second input of the trigger.

На чертеже приведеиа структурна электрическа схема устройства.The drawing shows the structural electrical circuit of the device.

Claims

The device for selecting the image sigal contains a television sensor I, whose input is connected through the selection unit 2 to the first exit of the matching unit 3. The output of the matching unit 3 and its second input are connected to the memory 4, and to the third input is a trigger 5. The vision sensor is also connected via the video signal selector 6 to the first input of the recorder 7 and the input of the signal generator 8, the output of which is connected to the second input of the recorder 7 and the second trigger input 5 The output of the coincidence unit 3 is also connected to the second input Elector 6 and the first input of the flip-flop 5, the third input of which is fed frame pulse (CSI). Building block selection 2 is known. For example, it may contain a trigger, to the installation input of which the pulses of the leading edges of a two-level video signal are fed, and the reset input is a video signal delayed for a period of a line. The trigger output is connected to an element I, through which 2 pulses of the trailing edges of a two-level video signal are fed to the output of the selection unit. Video signal selector 6 contains a trigger, a switch, memory elements and memory control elements. The recording unit 7 may contain a measure of a geometrical parameter, such as area, and a recorder of measurement results. As the main elements of the signal conditioner 8, for example, an RS-thrunger or a D-trigger (delay trigger) can be used. The installation input of the RS-flip-flop is connected to the output of the video signal selector 6, “and the reset input is fed from the back of the lower frequency sync signal. The RS-trigger output is connected to the 0-tr “delay delay input, on the clock input of which lower-case clock pulses are applied. The device works as follows. The double-level video signal (intersection pulses) corresponding to the image chords of a set of objects, from the output of the television sensor I, is fed to the input of the village unit, ktsyi 2. From the output of this block, the first input of the coincidence unit 3 receives pulses "beginning of the object corresponding to the rear edges of the first in the frame direction sweep pulses intersection of objects. At the output of the trigger 5 with the arrival of the frame sync pulse, a voltage level appears that permits the operation of the coincidence block 3, through which the first " object start passes. The coordinates of this pulse are memorized in memory block 4, in order to prohibit its repeated passage on the second input of block 3, and the pulse itself resets trigger 5, which locks the match block 3 on the third input, on the trailing edge. Video signal selector 6 is triggered by a pulse "beginning of the object, arriving at the second input from the coincidence unit 3, and selecting those intersection pulses that correspond to the choruses of the selected image of the object. From the output of the selector 6, the video image signal of the selected object enters the recorder 7, where it is measured according to a certain algorithm to find a specific geometrical parameter, and to the input of the RS-flip-flop setup of the signalizer 8. At the output of the delay trigger, there will be a high voltage level as long as the image signal of one object is selected. The voltage drop at the end of the selection is used to record the result of measuring the parameter of an object in the recorder 7 and to install trigger 5 on the second input. In this case, the block of coincidence of 3 skovka is resolved. With the arrival at the second input of the selector 6 of a pulse "start of the object corresponding to the first chord, not previously selected image of the object that is not prohibited by the signal from the memory block 4", the selection process of the image signal is repeated for the new object, etc. In the next frame, the selection process continues if for the first frame not all images of objects were selected. The use of the invention will significantly speed up the process of analyzing a set of images of an object. The speed gain in the anal sex will be proportional to the ratio of the height of the floor to the average height of the image of the object, which will be 10-20 times. 1 Using pulses as the start of an object as triggering the video signal selector allows simplifying the memory block. Apparatus of the Invention A device for selection and an image signal comprising a television sensor connected in series, a video signal selector 1 and a recorder, as well as a memory block characterized by an IIQM, which, in order to increase the speed of the device, a selection block, a coincidence block, a trigger and a driver are entered into it signal, the input of the selection unit is connected to the output of the telecommunication sensor, and the output of the selection unit is connected to the first input of the coincidence unit, to the second input of which the switch is connected the code of the memory unit whose input connected to the output of the coincidence unit, the third input of which is connected to the trigger output, the output of the coincidence block is connected to the second input of the video signal selector and the first input of the trigger, while the output of the video signal selector is connected to the input of the signal generator that is connected to the second input of the recorder on the second input of the trigger . Sources of information taken into account in the examination: 1. USSR author's certificate number 4325 & Cl. G 06 KI / 00, 1971.

2. USSR author's certificate No. 396 (Y4, class H 04 N 7/02, 01.19.71.