Rain produces sharp intensity fluctuations in images and videos, which degrade the performance of outdoor vision systems. These intensity fluctuations depend on various factors, such as the camera parameters, the properties of rain, and the brightness of the scene. We show that the properties of rain - its small drop size, high velocity, and low density - make its visibility strongly dependent on camera parameters such as exposure time and depth of field. We show that these parameters can be selected so as to reduce or even remove the effects of rain without altering the appearance of the scene. Conversely, the parameters of a camera can also be set to enhance the visual effects of rain. This can be used to develop an inexpensive and portable camera-based rain gauge that provides instantaneous rain rate measurements. The proposed methods serve to make vision algorithms more robust to rain without any necessity for post-processing. In addition, they can be used to control the visual effects of rain during the filming of movies.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    When does a camera see rain?


    Contributors:
    Garg, K. (author) / Nayar, S.K. (author)


    Publication date :

    2005-01-01


    Size :

    445969 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    When Does a Camera See Rain?

    Garg, K. / Nayar, S. / IEEE | British Library Conference Proceedings | 2005


    ON-VEHICLE CAMERA RAIN DROP REMOVAL DEVICE

    MIYAMOTO YUJI | European Patent Office | 2016

    Free access

    What does rain do to radar?

    McLarren, R. | Engineering Index Backfile | 1949


    Camera based rain sensor for a window pane

    ASHRAFI MINA / BOTUSESCU ADRIAN / GHEORGHE LUCIAN et al. | European Patent Office | 2019

    Free access

    Vehicular rain sensing system using forward viewing camera

    LU YUESHENG / MATTERN HEINZ A | European Patent Office | 2021

    Free access