SU1411781A1 - Device for digital restoration of image - Google Patents

Abstract

The invention relates to computing and can be used for digital processing of images obtained using an optical-electronic device with a conical, scanning space of objects. The purpose of the invention is to increase the resolution ability. A device containing a register 4, an adder 2, a block of elements AND 8, a delay element 6, a switching unit 1, a selection block 5, a clock generator 7, a subtraction unit 3, two blocks 9, 10 of the OR element are added. 4 il.

Description

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The invention relates to computing and a molset to be used for digital processing of images obtained using an optical-electronic device (OED) with a conical scan of the intercept space.

The aim of the invention is to increase the resolution of scanner images obtained in an optical-electronic device with a conical scan of the space of objects.

Figure 1 shows the functional diagram of the device for digital video signal carrying; on - switching unit; FIG. 3 shows a selection unit j in FIG. 4 — temporary diagrams of operation of the device.

The device contains a switching unit t, an adder 2, a subtraction block 3 j register 4, a selection block 5, a delay element 6, a clock generator 7, a block of 8 I elements, the first 9 and a second 10 blocks of OR elements, a trigger 11, the first 12 and the second 13 keys, the decoder 14, the element OR 15, the delay line 16, the third key 17, I The device works as follows.

G Video signals are fed to switching unit 1 and block 5 of selection j, which from the digital signal separates the sync pulses (SI) at the beginning and end of the line. When detecting the SI of the beginning of the string, the SI enters the launch input of the Inn at the same time from the output of the Symptom of the beginning and end of the selection block 5, the SI code of the beginning of the line comes through the block of elements OR: the device’s output performing the delay of the SI quenching for the period following the 1 video signal's counting to the second input (control of the switching unit 1. On this signal, the 1 kom1 unit of 1 mutation ensures the passage of the first video signal count to the first output, as well as the first, second , third, etc., OT bills to the second output, From the first output of the switching unit 1, the digital video signal of the first count through the block of elements OR 10 enters the register of the 4, where it is remembered, From the second: output signal of the switching block 1, the video signal of the jjiepBoro count comes to the first ii second inputs of the adder 2, where it is removed. The subtraction unit 3, based on the video signals arriving at its inputs from the outputs of the register 4 and cum1 of the matcher 2, performs the operation

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R B, 2B, -B ,,

(one)

first video countdown.

 Thus, during the passage of the first sample through the subtraction unit 3, a signal B is generated at its output (. o The result is recorded in register 4 after applying a clock pulse from the output of the GTI 7 to the second input of the AND 9 block of units, allowing the digital signal of the first reference to be output by the device and in register 5, second, third, etc., the counts are fed through adder 3 to the input of subtraction unit 4, which ensures that the operation is performed in accordance with formula (1). about the video signal reading, which is characterized by the lack of communication of the switching unit - a block of elements OR 9 “When block 5 selects the SI code, it detects the end of the line from the end of the line and the beginning of the line, this code goes through the block of OR 10 elements to the output of the device, the lines of the block 5 of the SI selection of the end of the line are input to the stop of the GTI; also the SI of the end of the line is fed to the first control input of the switching unit 1, which by this signal interrupts the passage of video samples to the inputs of the adder 2, The device operation is finished. With the arrival of the SI at the beginning of a new line, the operation of the device is repeated.

The time diagrams denote the SI of the beginning and end of the line, respectively, the video signal is designated as an amplitude-modulated signal. The magnitudes of the pulses at the output of block 8 are the difference between the magnitudes of the pulses of the signal at the output of block 2 and the pulses of the signal at the output of block 4

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The use of the invention allows to improve the quality of the resulting image by increasing the spatial resolution by almost 2 times.

Claims (1)

Invention Formula A device for digital image restoration comprising a register, adder, AND block, delay element, switching block, characterized in that, in order to show resolution, a selection block, clock generator, subtraction block, two blocks of elements are entered into it OR, the information input of the device is connected to the information input of the switching unit and the input of the block / selection, the output of the sign of the beginning of the line of which is connected to the input of the start of the clock pulse generator and the input of the delay element , Terminator block selection line input coupled to the input of the stop of the clock and the first control input of the switching unit, first exit coupled to a first input of a first OR element unit, whose output is connected to the information the input of the register, the output of which is connected to the input of the subtractive subtraction unit, the output of which is connected to the first input of the block of elements I, the second input of which is connected to the output of the clock generator, the output of the delay element is connected to the second control input of the switching unit, the second output of which is connected to the first and the second inputs of the adder, the output of which is connected to the input of the decremented subtraction unit, and the output of the sign of the beginning and end of the synchronization block line is connected to the first input of the second block of OR elements, the second the input of which is connected to the output of the block of AND elements, and the output of the second block of OR elements is connected to the second input of the first block of OR elements and is an information output of the device. FIG. 2 14 2 IS 17 Fig.d Fiel