###### Abstract  
In the present paper, we consider the issue of improving the accuracy of measurements and the peculiar features of the measurements of the geometric parameters of objects by optoelectronic systems, based on a television multiscan in the analogue mode in scanistor enabling. It is shown that the convolution of the input signal of the rectangular profile of the light zone with the impulse response of the multiscan explains the smearing of video signal edges. The value of smearing is completely determined by impulse response and does not depend on the zone width. It is established that signals of the action from narrow light zones are smeared out substantially relative to their width, and in this case, the conventional method for determining the zone width by the video signal derivatives stops working. A method is proposed for a full reconstruction of the rectangular profile of a light zone (including a narrow one) in a developed noise-proof optoelectronic measuring device based on a multiscan with the use of spatio-structural parameters, where the width of a light zone corresponds to an extent, illumination of the zone--to brightness, and its coordinate--to centroid. It is shown that the subtraction of the dissipation of the impulse response from the video signal dissipation allows for accounting of the value of the video signal smearing out with high accuracy at the estimation of the width of a light zone, in accordance with the property of the additive accumulation of dissipation. It is established that the use of the spatio-structural video signal model permits the extension of the application of multiscan-based optoelectronic devices for the high-accuracy control and measurement of the geometric parameters of small objects. multiscan; photodiode cell; light zone; video signal; impulse response; spatio-structural parameters +
Footnote †: journal: Applied Sciences  
1  
[PERSON], [PERSON], [PERSON], [PERSON], [PERSON], [PERSON], [PERSON], [PERSON], [PERSON]. robotics is a very important task [5; 6; 7; 8]. Multi-scan (MS), a semiconductor analogue of a television camera tube, is designed to convert the illumination distribution on its photosensitive surface into an electrical video signal (VS) used for controlling, processing, and transmitting optical information in the technical vision systems, especially for contactless controlling and measuring of coordinates, dimensions, and movements of various objects [9; 10; 11; 12; 13; 14; 15; 16]. Unlike charge-accumulating photoreeceivers of the scanning type (charge-coupled devices and photodiode integral matrices), television scanistor structures such as solid scanistor and multielement MS are able to register an instantaneous illumination distribution in a wide range [12; 14; 17]. This permits the separation of amplitude-modulated optical signal information in intensive light noise conditions [12; 18; 19]. The wide use of noise-proof multiscan-based optoelectronic devices (MODs) in automated control systems is explained by the reliability of their operation, simplicity of the schemes of separating and processing measurement information, their compactness, and high metrological and performance characteristics [20; 21; 22; 23; 24]. In particular, laser MODs satisfy the industrial requirements for simplicity of operation and high metrological characteristics; in MODs, the spatial position of an object is reflected by the mirror surface of a passive reflection element (deflector) mounted on the object, and the laser MOD operation is based on the optical location principle. It should be noted that the determination of the object coordinates and dimensions in industrial conditions is a difficult challenge and of great importance [5; 12; 25; 26]. It is shown in [12; 15; 17] that due to the limited steepness of the transition section of the multiscan photodiode cells, the I-V curve of the video signal from the rectangular profile of the light zone (LZ) is blurred and becomes bell-shaped.