SU1363274A1 - Apparatus for determining the square of contour images - Google Patents

Abstract

The invention relates to automation and computer technology and can be used in television image analysis systems for measuring the area of a fragment bounded by a contour line. The invention allows to simplify the design of known devices. The device contains a television sensor 1, a synchronous generator 2, a loop generator Ja.} Line 3, trigger 4, pulse generator 5, element AND 6, counter 7, three delay elements 8, 9, 10, element OR 11, element 12, element NE-13. The essence of the invention is that in each line of the television raster a chord of a fragment of the image is formed, the signals of the boundary points of which are extracted from the television signal of the contour line and fed to the counting trigger input. These signals are computed by comparing the current signal of the contour line with the signals of the previous line delayed by time intervals L, (where the horizontal period is the pulse generator), and excluding the contour line elements that coincide with the current signal of the contour line rows delayed by (f and t + C, 2kp, i (Lg

Description

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The invention relates to automation and computing, in particular, to devices for reading and measuring the geometrical parameters of the image of objects, and can be used in television automatic image analysis systems.

The aim of the invention is to simplify the device.

On fi1. 1 shows a block diagram of the device; in fig. 2 - time diagrams that indicate ei o work.

The device contains a television sensor 1, a sync generator 2, a generator 3 contour lines, trigger 4, 1 generator 5 pulses, the first element And 6, the counter 7, the first 8, the second 9 and the third 10 delay elements, the element OR 11, the second element And 12, element and NOT 13.

The device works as follows.

The video signal from the sensor 1, synchronized by the synchronizing generator 2, is fed to the input of the generator 3 contour line, which forms impulses normalized in amplitude and duration on the input - signal, contour line of the image of the object. This signal is formed from the video signal of sensor 1, for example, J by allocating an image front of an object. The horizontal sync pulses (FID) of the synchro-generator 2 are fed to the installation input of the trigger 4, it is reset to the initial state before the beginning of the horizontal scanning. FIDs also trigger a pulse generator 5, which generates raster line discretization pulses, which are simultaneously counting pulses for measuring the image area of an object. The trigger 4 forms in each line of the image chord of the object — gating signals opening the AND 6 element through which the generator 7 pulses pass to the counting input of the counter 7. The number of these pulses per frame is proportional to the measured image area of the object.

The signals input to the counting input of the trigger 4 are generated as follows. For convenience of comparison, the time diagrams of the contact line are given above each of the six lines that it occupies, and the sections are 63,774. 2

The torn line of the television raster line is highlighted in the form of dark elements. From the output of the generator 3, the signal of the contour line of the image of the object (Fig. 2a) is fed to a chain of delay elements 8, 9 and 10, and the signals are removed from the outputs of the cat (30);

Q d), delayed respectively at time T - C, T, Tj. + c relative to the signal in fig. 2a (where T is the horizontal scanning duration, t is the duration of one discretization element .J5 of the television raster). Further, the contour element of the current line, from which the chord is formed, is allocated if any of the delayed S1 lines coincide (Fig. 26, c, d) of the previous line with the signals of the current line (Fig. 2a) provided that this element does not belong at the same time, two branches of the contour line (such elements are in the 3rd and 6th lines). For

The 2nd of this one of the cell phones shown in FIG. 2 b, c, d, using the OR 11 element, a signal is generated, which is represented in FIG. 2e, and from the signals shown in FIG. 26, g, with the aid of 2Q, the power of the NAND 13 element is the signal shown in FIG. 2nd. Both signals, as well as the signal shown in FIG. 2a, arrive at the element 12, which realizes the specified condition for the selection of terminal elements.

5 chords, forming the signal shown in FIG. 2g. This signal is fed to the counting input of the trigger 4, which forms the signal-aly chords (fig.2z).

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Claims (1)

Invention Formula 45 A device for determining the area of contour images containing a synchronous generator, the first output of which is connected to the input of the pulse generator and the reset input of the trigger, the first element I, the first input of which is connected to the output of the generator of pulses, the second input is connected to the output of the trigger, and the output of the first element And connected to the counter input, the output of which is the output of the device, a television sensor whose input is connected to the second output of the clock generator, and the output connected to the first input of the contour line generator, Ora input of which is connected to the output of the pulse generator, and 50 55 the output is connected to one of the inputs bto poi o of the element I and to the input of the first delay element, the output of which is connected to the input of the second delay element, the element S1I and the third delay element, which, in order to simplify the device, contains E-NO item, the inputs of which are connected to the outputs of the first and third elements 744 delay, the input of the third delay element is connected to the output of the second delay element, the outputs of all three delay elements are connected to the corresponding inputs of the OR element, the output of which, as well as the output of the NAND element, are connected respectively to the second and third inputs of the second element AND, the output of which is connected to the counting input of the trigger. 1st strap 2nd strap s-ffc / npoffa -fic / npo / fo 5-s / g} rona 6- / fc po / (Q Fi..2