SU691894A1 - Apparatus for selecting object images - Google Patents

Description

(54) DEVICE FOR SELECTION OF IMAGES OF OBJECTS The device works as follows. For the reasoning, we assign the value I to the points of the objects, and the field on which the objects are located, the O value, to the points of the objects. A line scan is performed using the window, which is a collection of points, one of which 14 is central, and others are closest to her. Each dot of the image that falls on the window is analyzed. The value of point 14 is changed (converted) c. About on 1, if among the neighboring with her. Points. Find 1h :: at least three that have the value of I, and if you successively walk the points from first to last, no more than two transitions from 1 to 0 or from 0 to 1 occur. If at least one of these conversion conditions fails, the value of point 14 leave unchanged. Thus, for a window 26 (FIG. 2) with a size of 3x3 decomposition elements, the center point will be 14, and the neighboring 18-25; sequential detours can be made, for example, from 18 to 25. In the process of converting the points located above and to the left of the analyzed at some point in time, points 14 will have values changed as a result of the comparison, points below and to the right of point 14 will corresponding to the point values of the original invention. . When scanning the field in which the objects are located, from left to right and from top to bottom by a 3x3 element window, the image after transformation will take the form shown in FIG. 2, where the shaded areas refer to the analyzed objects, and the floor points that changed their value as a result of the comparison are marked, i.e. assigned to points of objects. In case of line scanning the field, this window analyzes all points in three adjacent lines. As a result of the transformation, the internal closed circuits on objects are compressed, ie, the value of the points of these sections is converted to the value of the points of the objects, and the total number of objects does not change. The conventionally accepted values of O and correspond to signals from field points and points of objects, respectively. After such a conversion (see Fig. 2), the number of objects (K) in the field is determined as the difference between the number of all pulses (R) received after the conversion in a time of 1 x

691894

Claims (2)

4 adrp and the number of coincidences (C) in two settled scan lines, i.e. . K - PB This difference in this case is equal to 2. The video signal received from the TV sensor 1, the passage through elements 2-4, enters the block at etching 5. Since this block controls the video signal conversion, then from outputs 13, 15 , 16 and 17 remove 7-s signal transformed, which, passing through element 6, arrive at counter 7. Let point 14 be at the center of the window (Fig. 2), with the value of-. Neither points 14, 18-23, 25 of the window are equal to O, and the value of point 24 is equal to 1, i.e. At outputs 11–13, 15–17, 8, and 9, there will be a signal O, and at output U, a signal (Fig. 1). In block 5, the setup signal is not generated, since the number of signals with a value of i is equal to one and there are no signals at its output. In this way. For this case, the signal from point 14 is unchanged. For point 27, the initial value of O changes to 1, since the number of transitions I – O is two (18–19, 21–22), and the number of points with a value is three (19, 20, 21). The introduction of new structural links will significantly improve the accuracy of the device. The invention The device for selecting images of objects, containing a television sensor, the output of which through the first delay element is connected to the control unit and to the second delay element, a counter connected to the AND element, and a third delay element, characterized by the fact that increase the accuracy of the unit; in it, the second delay element is connected to the control unit, with the And element and with the input of the third delay element, whose outputs are connected, to the control unit, And element, and to the counter. Sources of information taken into account in the examination 1. USSR author's certificate number 475636, cl. G 06 K 9/00, 1974. 2. The patent of France. M 2131086, cl. 6 06 K 9 / OO, published, 1972 (pro-yutyp).