Imaging apparatus using common regions between images for luminance compensation
AssigneeDenso Corporation
InventorMasato Nishikawa
Life of this patent
Estimating the term…
Abstract
In an imaging apparatus, a common region identifier identifies a common region of each of a first image captured by a front monitor camera and a second image captured by a surrounding monitor camera. A difference calculator calculates a target luminance difference between the common region of the first image and the common region of the second image. A luminance adjuster performs, based on the target luminance difference, at least one of (i) a first adjustment of adjusting a luminance of the first image and (ii) a second adjustment of adjusting the at least one imaging parameter of the front monitor camera.
Claims10
An imaging apparatus to be installed in a vehicle including a compartment, a front windshield, and a surrounding monitor camera having a surrounding field of view of the vehicle, the surrounding monitor camera being located outside the compartment of the vehicle, the imaging apparatus comprising:
- a front monitor camera having a front field of view for capturing, through the front windshield, a first image of the front field of view using at least one imaging parameter, the front field of view at least partly overlapping the surrounding field of view of the surrounding monitor camera so that an overlapped region between the front field of view and the surrounding field of view is defined as a common region of each of the first image and a second image captured by the surrounding monitor camera;
- a common region identifier configured to identify the common region of each of the first and second images;
- a difference calculator configured to calculate a target luminance difference between the common region of the first image and the common region of the second image;
- and
- a luminance adjuster configured to perform, based on the target luminance difference, at least one of (i) a first adjustment of adjusting a luminance of the first image and (ii) a second adjustment of adjusting the at least one imaging parameter of the front monitor camera.
An imaging apparatus to be installed in a vehicle including a compartment, a front windshield, and a surrounding monitor camera having a surrounding field of view of the vehicle, the surrounding monitor camera being located outside the compartment of the vehicle, the imaging apparatus comprising:
- a front monitor camera having a front field of view for capturing, through the front windshield, a first image of the front field of view, the front field of view at least partly overlapping the surrounding field of view of the surrounding monitor camera so that an overlapped region between the front field of view and the surrounding field of view is defined as a common region of each of the first image and a second image captured by the surrounding monitor camera;
- a common region identifier configured to identify the common region of each of the first and second images;
- and
- a fogging determiner configured to:
- determine whether an amount of blurring in the common region of the first image is greater than a predetermined first determination criterion;
- determine whether an amount of blurring in the common region of the second image is smaller than or equal to a predetermined second determination criterion;
- and
- determine that there is fogging of the front windshield in response to determination that the amount of blurring in the common region of the first image is greater than the predetermined first determination criterion, and the amount of blurring in the common region of the second image is smaller than or equal to the predetermined second determination criterion.
Dependencies are inferred from the claim text.