SU1474699A1 - Object image coder - Google Patents

Abstract

The invention allows for a high speed to form at the output of the device a vector, the dimension of which is the number of rows of the array of photodetectors, whose elements are a number characterizing the distance between the two extreme shaded points in each row of the array of photodetectors. The device is insensitive to the appearance in the shaded area of the illuminated inside and its areas. 2 Il.

Description

one

The invention relates to the field of automation and computer technology, and can be used in image recognition systems and automatic image processing in the identification of people.

The aim of the invention is to simplify the device and increase the reliability of reading.

1 shows a diagram of the device; Fig. 2 shows an example of the image being encoded.

The device comprises a block of emitters 1, optically coupled to a matrix of photodetectors 2, threshold elements 3, a group of encoders 4, a group of adders 5.

The outputs of the first half of each row of the matrix of photodetectors 2 are connected to the corresponding inputs of threshold elements 3, the outputs of which are connected to the inputs of odd encoders 4, and the outputs of the second half of each row of the matrix are connected to the corresponding inputs of threshold elements 3, the outputs of the latter are connected to the inputs of even encoders 4, the outputs of each pair of encoders 4 are connected to the first and second inputs of the corresponding adders 5, the outputs of which are the outputs 6 of the device.

The device works as follows.

The object is placed with a possible horizontal displacement (Fig „2) between the emitter 1 and the matrix of photo detectors 2. Signals from the outputs of the elements of the matrix of photodetectors 2 using the threshold elements 3 form at the inputs of the encoders 4 a matrix of logical signals O and 1, and O corresponds to the illuminated element of the matrix of photodetectors, and 1 - shaded. The signals from the first half of each row of the matrix through the corresponding threshold elements 3 are fed to the even encoders 4, the output

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Claims (1)

which forms a binary number corresponding to the number of elements of the matrix from its axis to the extreme shaded element. Similarly, the numbers at the outputs of odd encoders 4 are formed. The outputs from odd encoders 4 are fed to the first, and from even ones to the second inputs of adders 5. As a result, binary outputs are formed at the outputs of summators 5, which are outputs 6 of the device. corresponding to the distance between the outermost shaded elements in each row. The device is insensitive to horizontal object shifts and the presence of illuminated areas in the shaded area. Invention Formula Device for encoding images of objects containing matrices five 0 photodetectors and threshold elements, characterized in that, in order to simplify the device and improve readability, it contains a block of emitters optically connected to the photoreceiver matrix, a group of encoders and a group of adders, and the outputs of the photodetectors of the first half of each row of the matrix through the corresponding threshold elements connected to the inputs of the odd encoder groups, and the outputs of the photodetectors of the second half of each row of the matrix through the corresponding threshold elements connected to the inputs of even shi tors group, each pair of outputs of encoders connected to first and second inputs of corresponding adders, the outputs of adders are output devices. ./ troc} g s c 5 6 7 8 9 70 11/2 / 3 W / 5 76 -o oh oh oh oh oh oh oh oh oh About About About About About About About About oh oh oh oh oh oh oh oh oh About About About Q, w / m ° ° O.O. oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh w / m ° ° Fie.2