SU1176812A1 - Device for determining coordinates of image - Google Patents

Description

The invention relates to an image processing technique and can be used in optical measuring systems, orientation devices, robotics.

The aim of the invention is to increase speed and increase accuracy in determining coordinates. convex single linked images.

Fig. 1 shows a structural electrical circuit of the device for determining image coordinates, and Fig. 2 shows a timing diagram of clock pulses.

The device contains a matrix 1 on a charge-coupled device (CCD) with the size M of N decomposition elements, an output register 2, a read amplifier 3 and an additional read amplifier t, a switching unit 5 and

Clock 6 busses common to the matrix 1. And output register 2.

The device works as follows.

First, there is an accumulation of tokkeirovanny carriers when projecting an image in a period of time t, -t2. M applying voltage to

“Mi electrode of matrix 1, for example, the second phase. Then, over time, the accumulated information is read by transferring the charges over the matrix 1 through the output register 2 and the read amplifier 3. Due to the fact that the clock frequencies of the power pulses of the matrix 1 and the output register 2 are the same, in the output register 2 the charges from the elements located along the diagonal of the matrix 1. Ll readout.

the frame requires M + N - 1 clock pulses, and one image coordinate can be determined. To determine the second coordinate, another sample is needed. Therefore, the voltage is re-applied to the second phase and the time interval, and the video information is accumulated, and then the second frame is read. However, now the direction of the charge in the output register 2 is reversed, which is achieved by changing the order of the phases in the output register 2 using the Switching unit 5, which switches over by the signal Cf. In the case of a three-phase power supply system, it reaches; Phases F and P, i.e. the first phase becomes the third, and the third the file of the first. Summation

The charges in the output register 2 when reading the second frame occur according to the diagonal m orthogonal to the diagonal m of the first frame. This makes it possible to determine the second coordinate of the image and thus unambiguously fix its spatial position. The number of output signals from two frames is equal to j 2 {M-fN-1) 3, In addition to reducing the output volume

information, the device compresses the image, which leads to an increase in the accuracy of determining the horizon and the center of gravity of the image.

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IMiMi i

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Fi & 1

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Claims (1)

DEVICE FOR DETERMINING THE COORDINATES OF THE IMAGE, containing a matrix on charge-coupled devices with an output register, to the first output of which a read-in amplifier is connected, characterized in that, in order to improve performance and increase accuracy, an additional read-out amplifier is introduced into it, the input of which is connected to the second output register output, and a switching unit combining the same-named clock electrodes of the output register and matrix on charge-coupled devices.