This article describes a computer system for increasing the local contrast of railway images obtained with digital video cameras. The local contrast of the images increases within the rectangular windows, for each of which the minimum and maximum brightness values are determined. Based on such extreme brightness values, the lower and upper envelope brightness of the image are calculated. By smoothing of the envelopes the artefacts that appear in the image after increasing the local contrast based on its envelopes are significantly reduced. The images are read to the control computer from USB video cameras. The software implementation of image processing is created in Python.


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    Title :

    Computer system for increasing the local contrast of railway transport images


    Contributors:

    Conference:

    Fifteenth International Conference on Correlation Optics ; 2021 ; Chernivtsi,Ukraine


    Published in:

    Proc. SPIE ; 12126


    Publication date :

    2021-12-21





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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