SU1564660A1 - Device for selection of elements of object images - Google Patents

Abstract

The invention relates to automation and can be used to highlight areas of an image of arbitrary shape. The purpose of the invention is to simplify the device. The goal is achieved with the exception of complex nodes and the introduction of a trigger connected to the memory unit and to the adder. 2 Il.

Description

The invention relates to automation and computer technology, in particular to devices for selecting elements of a television image, and can be used to isolate image areas of arbitrary shape and then process them on a computer.

The purpose of the invention is to simplify the device.

FIG. 1 is a block diagram of the device; in fig. 2 is an example of a device operation.

The device contains a television sensor 1, a scan generation unit 2, a first driver 3 of signals (tags, marker), an adder 4, an indicator 5, a video control unit made in block, a memory block 6, a second driver 7 of signals (recording), a trigger 8.

The first driver of the signals contains comparators 9, 10, reversible counters And, 12, element And 13 and

the controlled decoder 14, and the second driver of the signals contains a delay element 15 and a driver of 16 pulses.

The device works as follows.

From the sensor 1, the video signal through the adder 4 is fed to the indicator 5.

In the initial state, in block 6, memory in all cells was recorded on O. This is done by writing to all cells O supplied to the control input of memory block 6 (see, Lig. 1). Unit 2 supplies the comparators 9, 10 of the imaging unit 3 with the current coordinate codes X and Y. At the time the X and Y codes coincide with the codes that are formed at the outputs of the reversible counters 11 and 12, the outputs of the comparators 9 and 10 are given in TC signal 1. These signals will pass to the output of the imaging unit 3 through the element I 13 and arrive at the input of the adder D. This will lead to the fact that on the screen

cl

uh

Ј

СЈ О

Indicator 5 will form a bright spot corresponding to the location of the mark on the screen. At the same time, an output pulse will be received at the output of the imaging unit 7, recording in the memory block 6. If at this point in time the operator brought the mark to the place where the image of the object began to traverse (see Fig 2), then the control input of memory block 6 will be fed 1. This will result in the memory cell whose address corresponds to the coordinates marks on the screen, at the moments of formation of a pulse at the output of the imaging unit 3 marks, the unit will be recorded 1.

In the process, the operator moves the label along the contour of the image. Consequently, in all the memory cells, the addresses of which corresponded to the current coordinates of the label and YM, 1 will be recorded (the trace of the movement of the label over the image information field).

Block 6 all the time, except for the moments during which the pulse 3 is generated at the output of the imaging unit 3, operates in the read mode. The info from its output goes to the counting input of the trigger 8 and all the time modifies (changes to the opposite) its state. T, e, the first single impulse from the output of the block b will translate trigger 8 into state 1, the second into the state O, the third into state 1, the fourth into the state O, and so on. The binding of the initial state of the trigger 8 is carried out by the FID at its input to the installation in O.

The logic of forming the signal at the output of the trigger 8 coincides with the logic of forming the output signal of the prototype memory block. The only difference is that in the prototype, the video signal modification along the line is written in the memory block, starting from the Xw coordinate and until the end of this line, the information in according to the algorithm; Read - Modify - Write This record is made each time the next time the coordinates of the label change. In the proposed device, a similar modification is performed by the trigger 8 dynamically, i.e., during the formation of

No TV scan image of the current line. The 3 block of memory contains only the coordinates X of the beginning and the end of the image of the object along each television line. The resultant video signal at the input of summation 4 is completely similar to the corresponding signal at the input of the prototype adder.

In a similar way, while preserving all the functions performed in relation to .. -. To the well-known device, a reduction in hardware costs for cw ° was achieved - excluding from its composition the X and Y write address formers, the unit for determining the direction of movement of the socket, multiplexer addresses and others; items.

Claims (1)

Invention Formula A device for selecting image elements of objects containing an adder, the first and second information inputs of which are connected to the information output of the television sensor and the output of the first signal generator, and the output connected to the information input of the indicator, a scanner forming unit, the control input of which is connected to the clock output of the television the sensor, and the outputs are connected to the information and synchronization inputs of the first shaper of signals, respectively, and the second shaper with The output of which is connected to the recording control input of the memory unit, characterized in that, in order to simplify the device, it contains a trigger, the counting input of which is connected to the output of the memory unit, the setup input is connected to the synchronization output of the scanner generation unit, and the output is connected to the third information input of the adder, wherein the control input of the memory block is the control input of the device, the address inputs of the memory block are connected to the corresponding Vappodes of the scanner formation unit, and the clock input of the second signal conditioner is connected to the output of the first signal conditioner, (L iK- -OfL „, By moving the etti FIG. t & // $ /} Msitjtfwve is // u / e-e / rffflVPMW & $$ efa # Haff fffaffCfflff # 0VffJ70 {§ # 0 $ a / 7pofr eMi / 0 iwt i / rwtff- wept / g Mftntfti -% № & / tif lviguee t / h / s faxofa vk / egfs $ @ e Tory fames / e // {/ # m & gmi FIG. 2