Radiance Fields for Three-Dimensional Reconstruction and Novel View Synthesis in Large-Scale Environments
US-2024420413-A1 · Dec 19, 2024 · US
Image processing apparatus, image capturing apparatus, image processing method, and storage medium
US2025209582A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025209582-A1 |
| Application number | US-202418983845-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 17, 2024 |
| Priority date | Dec 25, 2023 |
| Publication date | Jun 26, 2025 |
| Grant date | — |
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- Title
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Abstract
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An image processing apparatus generates a first and evaluation images based on an image, generates, based on the first evaluation image, a first gain map for first tone mapping processing, applies the first tone mapping processing that is based on the first gain map to the second evaluation image, generates, based on the second evaluation image to which the first tone mapping processing has already been applied, a second gain map for second tone mapping processing different from the first tone mapping processing, applies the first tone mapping processing that is based on the first gain map to the image, and applies the second tone mapping processing that is based on the second gain map to the image to which the first tone mapping processing has already been applied.
First claim
Opening claim text (preview).
What is claimed is: 1 . An image processing apparatus, comprising: at least one memory configured to store instructions; and at least one processor in communication with the at least one memory and configured to execute the instructions to: generate, based on an image, a first evaluation image for first tone mapping processing; generate, based on the image, a second evaluation image for second tone mapping processing, the second tone mapping processing being different from the first tone mapping processing; generate, based on the first evaluation image, a first gain map for the first tone mapping processing; apply the first tone mapping processing that is based on the first gain map to the second evaluation image; generate, based on the second evaluation image to which the first tone mapping processing has already been applied, a second gain map for the second tone mapping processing; apply the first tone mapping processing that is based on the first gain map to the image; and apply the second tone mapping processing that is based on the second gain map to the image to which the first tone mapping processing has already been applied. 2 . The image processing apparatus according to claim 1 , wherein each of the first tone mapping processing and the second tone mapping processing is one of brightness correction, contrast correction, and haze correction. 3 . The image processing apparatus according to claim 2 , wherein the first tone mapping processing is the haze correction, and to generate the first gain map, the at least one processor executes the instructions to generate a transmission map based on the first evaluation image. 4 . The image processing apparatus according to claim 2 , wherein the second tone mapping processing is the haze correction, and to generate the second gain map, the at least one processor executes the instructions to generate a transmission map based on the second evaluation image. 5 . The image processing apparatus according to claim 1 , wherein the at least one processor executes the instructions to generate the first evaluation image based on the image and on a low-frequency image generated from the image. 6 . The image processing apparatus according to claim 1 , wherein the at least one processor executes the instructions to generate the second evaluation image based on the image and on a low-frequency image generated from the image. 7 . The image processing apparatus according to claim 1 , wherein the image is a monochrome image. 8 . The image processing apparatus according to claim 1 , wherein the image is a color image. 9 . An image capturing apparatus, comprising: the image processing apparatus according to claim 1 ; and an image capturing sensor configured to generate the image. 10 . An image processing method executed by an image processing apparatus, comprising: generating, based on an image, a first evaluation image for first tone mapping processing; generating, based on the image, a second evaluation image for second tone mapping processing, the second tone mapping processing being different from the first tone mapping processing; generating, based on the first evaluation image, a first gain map for the first tone mapping processing; applying the first tone mapping processing that is based on the first gain map to the second evaluation image; generating, based on the second evaluation image to which the first tone mapping processing has already been applied, a second gain map for the second tone mapping processing; applying the first tone mapping processing that is based on the first gain map to the image; and applying the second tone mapping processing that is based on the second gain map to the image to which the first tone mapping processing has already been applied. 11 . A non-transitory computer-readable storage medium which stores a program for causing a computer to execute an image processing method comprising: generating, based on an image, a first evaluation image for first tone mapping processing; generating, based on the image, a second evaluation image for second tone mapping processing, the second tone mapping processing being different from the first tone mapping processing; generating, based on the first evaluation image, a first gain map for the first tone mapping processing; applying the first tone mapping processing that is based on the first gain map to the second evaluation image; generating, based on the second evaluation image to which the first tone mapping processing has already been applied, a second gain map for the second tone mapping processing; applying the first tone mapping processing that is based on the first gain map to the image; and applying the second tone mapping processing that is based on the second gain map to the image to which the first tone mapping processing has already been applied.
Assignees
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Classifications
Color image · CPC title
- G06T5/92Primary
based on global image properties · CPC title
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Frequently asked questions
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- What does patent US2025209582A1 cover?
- An image processing apparatus generates a first and evaluation images based on an image, generates, based on the first evaluation image, a first gain map for first tone mapping processing, applies the first tone mapping processing that is based on the first gain map to the second evaluation image, generates, based on the second evaluation image to which the first tone mapping processing has alr…
- Who is the assignee on this patent?
- Canon Kk
- What technology area does this patent fall under?
- Primary CPC classification G06T5/92. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Jun 26 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).