Object position detection apparatus and display method using the same
US-2024329826-A1 · Oct 3, 2024 · US
Image processing method for optical touch system
US9170682B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9170682-B2 |
| Application number | US-201213446896-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 13, 2012 |
| Priority date | Apr 14, 2011 |
| Publication date | Oct 27, 2015 |
| Grant date | Oct 27, 2015 |
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Abstract
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An image processing method for an optical touch system includes the steps of obtaining an image and generating a light distribution curve pattern from the image, selecting a target signal of the light distribution curve pattern in accordance with light intensity information of the light distribution curve pattern, determining at least one rising slope and at least one falling slope of the target signal, and selecting the target signal as an object signal when the absolute values of the at least one rising slope and at least one falling slope are greater than a threshold.
First claim
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What is claimed is: 1. An image processing method for an optical touch system, comprising the steps of: obtaining an image of an object contacting a sensing area of a touch surface by generating a light distribution curve pattern representing light intensity values of light directed at and around the object from a light source; determining presence of at least one target signal from the light distribution curve pattern in accordance with the light intensity values from the light…
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Physics · mapped topic
- G06F3/0421Primary
Physics · mapped topic
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- What does patent US9170682B2 cover?
- An image processing method for an optical touch system includes the steps of obtaining an image and generating a light distribution curve pattern from the image, selecting a target signal of the light distribution curve pattern in accordance with light intensity information of the light distribution curve pattern, determining at least one rising slope and at least one falling slope of the targe…
- Who is the assignee on this patent?
- Su Tzung Min, Lin Yu Chia, Hsu Teng Wei, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification G06F3/0421. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Oct 27 2015 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).