Image capturing apparatus, control method for the same, and storage medium
US-11055871-B2 · Jul 6, 2021 · US
Deposit detection device and deposit detection method
US11250553B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11250553-B2 |
| Application number | US-202017019853-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 14, 2020 |
| Priority date | Sep 20, 2019 |
| Publication date | Feb 15, 2022 |
| Grant date | Feb 15, 2022 |
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Abstract
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A deposit detection device according to an embodiment includes a calculation module, an extraction module, and a decision module. The calculation module calculates a brightness average for each of small regions into which a predetermined region of an image captured by an imaging device is divided. The extraction module extracts, as a high-brightness region, the small region in which the brightness average calculated by the calculation module is equal to or larger than a predetermined value. The decision module decides on a brightness threshold value for detecting a deposit region corresponding to a deposit adhering to the imaging device, based on the area of the high-brightness region extracted by the extraction module.
First claim
Opening claim text (preview).
What is claimed is: 1. A deposit detection device comprising: a calculation module configured to calculate a brightness average for each of small regions into which a predetermined region of an image captured by an imaging device is divided; an extraction module configured to extract, as a high-brightness region, the small region in which the brightness average calculated by the calculation module is equal to or larger than a predetermined value; and a decision module configured to decide on a brightness threshold value for detecting a deposit region corresponding to a deposit adhering to the imaging device, based on an area of the high-brightness region extracted by the extraction module. 2. The deposit detection device according to claim 1 , wherein the decision module decides on the brightness threshold value based on number of the high-brightness regions extracted by the extraction module. 3. The deposit detection device according to claim 1 , wherein the calculation module calculates a brightness average of the entire predetermined region, and the decision module decides on the brightness threshold value, based on a brightness average of an entire region of the image and the area of the high-brightness region. 4. The deposit detection device according to claim 1 , wherein the extraction module extracts the high-brightness region from among the small regions excluding a body region corresponding to a vehicle body, in the predetermined region. 5. A deposit detection method comprising: calculating a brightness average for each of small regions into which a predetermined region of an image captured by an imaging device is divided; extracting, as a high-brightness region, the small region in which the brightness average calculated at the calculating is equal to or larger than a predetermined value; and deciding on a brightness threshold value for detecting a deposit region corresponding to a deposit adhering to the imaging device, based on an area of the high-brightness region extracted at the extracting.
Assignees
Inventors
Classifications
by dust removal, e.g. from surfaces of the image sensor or processing of the image signal output by the electronic image sensor · CPC title
- G06T7/0002Primary
Inspection of images, e.g. flaw detection · CPC title
Image quality inspection · CPC title
involving thresholding · CPC title
Varying illumination · CPC title
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- What does patent US11250553B2 cover?
- A deposit detection device according to an embodiment includes a calculation module, an extraction module, and a decision module. The calculation module calculates a brightness average for each of small regions into which a predetermined region of an image captured by an imaging device is divided. The extraction module extracts, as a high-brightness region, the small region in which the brightn…
- Who is the assignee on this patent?
- Denso Ten Ltd
- What technology area does this patent fall under?
- Primary CPC classification G06T7/0002. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 15 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).