SU1499371A1 - Device for threshold identification of objects - Google Patents

Abstract

The invention relates to computing and can be used for image processing. The purpose of the invention is to simplify the device. The digital processing device contains a comparison unit, a register, a counter. Achieving the goal was made possible by eliminating the memory block and by simplifying the control block to the counter. The elements of the image through the register arrive at the first input of the comparison unit and at the output of the amplitude information. The threshold value with which the image elements are compared is fed to the second input of the comparison unit. The clock signals are fed to the register and counter clock input. From the output of the comparison unit, information about the detected objects in the image is read. Coordinate information is read from the counter output. 1 il.

Description

The invention relates to computing and can be used to process statistical infarmatdai, such as images.

The purpose of the invention is to simplify the device.

The drawing shows a device diagram.

The device contains a register 1, a unit 2 of comparison, a counter 3, an input 4 of the device, an output 5, an input 6, an output 7, an input 8, an outputs 9 and 10 and an input 11.

The device operates 1 as follows.

,one

Image elements);

J

sampled in the form of a matrix with the size of IXJ elements are successively compared with a threshold value (f, Elements of the image equal to or greater than the threshold values (O, belong to the objects to be detected. Elements of the image smaller than (J, refer to the background. In comparison block 1, operation of subtracting from the magnitude of the image element D, j threshold value t |). If q; then the output of the feature is greater than or equal to comparison unit 1 contains a zero signal. If Dj | j: (|), then the output of the feature is greater than or equal to block like This contains a single signal. The contents of the counter 3 correspond to the number of the input image element, i.e. its coordinate in the image frame. Before the start of the objects in the image, the counter 3 was filled with 4

WITH

with

00

Claims (1)

In the zero state by applying a zero signal to the input 11. Thus, the output 5 contains the amplitude value of the image element, the output 10 - its coordinate in the image frame. The output 7 contains a signal identifying the belonging of the image element to the object being detected or the background, the facilities connected to the second information output 9 are transmitted from the input 8 sync signals, the information from the outputs Back7 and 10 of the device should be read out when the sync signal at the output 9c of the unit to zero changes. standing, i.e. when the information on the outputs 5.7 and 10 does not change. From outputs 5.7 and 10, information about the detected elements of objects can (be read into an external device for further processing or registration. Formula. Threshold object detection device containing a comparison unit. the input of the comparison unit, the output of the feature greater than or equal to the comparison unit is a sign of object detection in the device image, the device synchronization input is connected to the counter synchronization input and is the device synchronization output, the information output of the counter is the output of the device element coordinates, the setup input to the initial state of the device is connected to the reset input of the counter. characterized in that, in order to simplify the device, a counter is entered into it, the device element loading input is connected to the first information input of the comparator unit and the amplitude output of the device element signal, the threshold value input input by the comparator device input, the sign output is greater than or equal to the block Comparison is a sign of detection of an object in the device image, the device synchronization input is connected to the counter synchronization input and is the device synchronization output. the information output of the counter is the output of the coordinates of the image element of the device, the installation input of the initial state of the device is connected to the reset input of the counter.