SU1285504A1 - Device for converting pictures - Google Patents

Abstract

The invention relates to the field of automation and computer technology and can be used to transform, correct and improve image quality. The purpose of the invention is to increase accuracy. This goal is achieved in the device by the fact that it contains an image scaling unit and an amplifier with a controlled transmission coefficient, whose information input is connected to the output of the adder, and the output - to the inputs of the block dikatsin weighting function and image display unit, and The image scale is mechanically connected with the image carrier movement unit, the output potentiometric sensor of which is connected to the control input of the amplifier with a controlled transmission coefficient. 1 il. ABOUT)

Description

 The invention relates to automation, namely, optical information processing devices, and can be used to transform, correct and improve image quality.

The device allows the adjustment of the variable magnitude of the image distortion with the input image burn-in to the spatial parameters of the image analysis unit 7 to be provided by the image projection zoom unit 6. The embodiments of this block depend on how the projection 1CION element 5 is made.

For example, if it is designed as an optical system consisting of two

The spatial parameters of the anaaaaa block, one of which has a pezhoge image with the input spatial parameters of the image analysis unit 7, is the image projection zoom unit 6. The embodiments of this block depend on how the projection 1CION element 5 is made.

For example, if it is designed as an optical system consisting of two

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The first property is realized by changing the scale of the image projection in accordance with the change in the size of image distortion, the second by changing the gain of the amplifier with a controlled gain when changing the scale of the image projection.

The purpose of the invention is to improve accuracy.

The drawing shows the scheme of the proposed device.

The device contains a light source 1, a focusing element 2, an image transfer unit 3, an image carrier 4, a projecting element 5, an image zooming unit 6, an image analysis unit 7, an adder 8, an amplifier 9 with a controlled gain, a weight function indication unit 10 and a unit 11 image output. The image carrier transfer unit 3 contains a potentiometric sensor (not shown).

The device works as follows.

The light source 1 by means of the focusing element 2 illuminates a portion of the carrier 4 of the image. The latter is moved relative to the device with the help of a motion unit 3, made, for example, in the form of a drum scanning device used in phototelegraphy. The projecting element 5 projects the portion of the original image to the input of the image analysis unit 7. In this case, the scale of the image projection is determined by the amount of distortion in the readable section of the image by the input spatial parameters of block 7, depending on the processing algorithm used.

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To accommodate the changing distortion values,

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the belt focal distance, then any device that changes the focal length of this lens so that the zoom ratio of the projection of the image at the output of the projecting element 5 is inversely proportional to the ratio of the distortion of the processed image is block 6. of the device, a mechanism with a flat-toothed belt or gear drive of the rotational motion from the drive of the block 3 to the control element of the lens with a variable focal distance. The rotation of this element causes a change in the focal length of the lens and thereby a change in the scale of the projection of the image at the output of the projecting element 5c. The rotation of the control element of the lens with a variable focal length can also be performed using an electric drive controlled by electrical sync signals from the sensors 3 and tracing the movement of the image carrier.

It is also possible embodiment of block 6, based on the use as a projecting element 5 just one lens. In this case, unit 6 is a mechanism that ensures the corresponding movements of the lens and the input plane of the image analysis unit 7. The mechanism can be a hinged-cam or cam driven from the drive unit 3 move the image carrier.

In all the given examples of implementation of block 6, the reference to zooming the projection of the image to moving the image carrier is used. This is valid due to the fact that only as a result of the transfer of the image carrier during processing does the change in magnitude appear

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image distortion. This implies that the image carrier, which rotates along with the surface of the drum on which it is fixed, also moves along the axis of rotation of the drum, and that this carrier is fixed on the surface of the drum in such a way that the direction in which the magnitude of the image distortion changes , coincides with the direction of the longitudinal movement of the image carrier. In addition, it is believed that the dependence of the change in the magnitude of the distortion on the magnitude of the movement of the image carrier is known and can be taken into account when choosing the parameters of the device implementing block 6.

The image analysis unit 7 can be implemented like a unit in a known device.

From the outputs of the I-analysis analysis unit 7, electrical signals are fed to the inputs of the adder 8. The resulting signal from the output of the adder 8 is fed to the information input of the amplifier 9 with a controlled transmission coefficient.

The amplifier 9 performs a change in the transmission coefficient of the electric

From the output of block 9, the amplitude-converted signal is fed to the input of block 10 of the display of the weighting function, which is an oscilloscope with which you can observe the individual components of the weighting function in the process of setting up the device for a given processing algorithm.

From the output of block 9, the amplitude-converted signal is also fed to the input of block 11 of the image, which is a node of the J5 information display, similar to, for example, a photo-telegraphic receiving device.

 The use of the proposed device, in comparison with the known one, makes it possible to significantly increase the accuracy and quality of image processing with variable distortion value of the image field.

Claims (1)

Invention Formula An image conversion device comprising sequentially and optically coupled 20 The signals are inversely proportional to the square of the light source, which focuses an element and an image analysis unit whose outputs are connected to the inputs of the adder, an image carrier transfer unit, an indication unit of the weighting function ic and an image output unit, characterized in that, in order to increase accuracy, it contains an image scale change unit and an amplifier with controllable Such a factor of variation of the magnitude of the distortion of the original image and can be implemented, for example, by means of an operational amplifier, the negative element of which is connected to a control element, for example, a quadratic potentiometer. dependence of resistance on the angle of rotation of its axis. The transmission coefficient and image analysis unit, the outputs of which are connected to the inputs of the adder, the transfer unit of the image carrier, the display unit of the weighting function and the image output unit, characterized in that, in order to improve the accuracy, it contains the unit for changing the image scale and the amplifier with controlled This scheme is inversely proportional to 40 transmission coefficient, the information input of which is connected to the output of the adder, and the output - to the inputs of the display function of the weighing function and the image displaying unit, with the image scale changing unit mechanically connected to the carrier transfer unit, the output of potentiometric sensor with a control input of the amplifier with a controlled transmission coefficient. feedback circuit transmission coefficient, i.e. inversely proportional to the square of the angle of rotation of the axis of the control potentiometer. Structurally, the element that controls the transfer ratio of the amplifier 9 can be located in block 3 and act as a potentiometric sensor that monitors (for example, using mechanical coupling) the displacement of the image carrier. From the output of block 9, the amplitude-converted signal is fed to the input of block 10 of the weighting function display, which is an oscilloscope with which you can observe the individual components of the weighting function in the process of setting up the device for a given processing algorithm. W From the output of block 9, the amplitude-converted signal is also fed to the input of block 11 of the image, which is a node of the element-by-element display of information, similar to, for example, a photo-telegraphic receiving device. The use of the proposed device, as compared with the known one, makes it possible to significantly increase the accuracy and quality of image processing with a variable distortion value of the image field. Invention Formula An image conversion device comprising a sequentially arranged and optically coupled light source focusing an element and an image analysis unit whose outputs are connected to the inputs of the adder, an image carrier transfer unit, a weight function indication unit and an image output unit, characterized in that, in order to improve accuracy, it contains an image scale change unit and an amplifier with controllable the transmission coefficient, the information input of which is connected to the output of the adder, and the output - to the inputs of the display unit of the weighing function and the image displaying unit; moreover, the unit for changing the image scale is mechanically connected to the transfer unit of the image carrier, the output of the potentiometric sensor controlled transfer ratio.