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Image processing apparatus using differential camera

An image processing and differential image technology, applied in the field of rapid detection of marks, can solve the problem of mistaking objects for mouse cursor icons, etc., and achieve the effect of reducing the burden of the CPU and reducing power consumption

Inactive Publication Date: 2015-07-29
李汶基
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Another object of the present invention is to solve the problem that the system may mistake an object for a mouse cursor icon when th

Method used

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  • Image processing apparatus using differential camera
  • Image processing apparatus using differential camera

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Experimental program
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Embodiment 1

[0014] Recently, a technique of capturing by a camera and recognizing the pointing of a mouse cursor icon in a monitor from the captured image has been developed. For example, there is a technology of Korean Patent No. 10-0936816 titled "Pointing device using camera and outputting mark". The technique was invented by the inventors of the present invention. The pointing technique above includes an embodiment of an image processing system that identifies markers from odd frames, where a monitor displays marker images in odd frames and normal images in even frames. Such as figure 1 As shown, the marker is easy to detect if it is a mouse cursor icon ICC located at the central area of ​​the monitor and there is a sufficiently clear border around the marker. However, if the mouse cursor icon ICE is touching figure 1 If there is an object whose texture PT is similar to that of the mouse cursor icon, it may be difficult for the image processing system to distinguish the mouse curso...

Embodiment 2

[0040] This embodiment is a modification of Embodiment 1. Embodiment 1 relates to an image processing system that computes a differential image between two sequentially captured images, where the first image is a black blank image (the blank image is all pixel values same image) and the marked image, and the second image is a modified normal image, where the modification means that the brightness of the area corresponding to the marked is reduced.

[0041] In comparison, this example:

[0042] sequentially displaying a first image and a second image, wherein the first image is a composite of a first color (eg, red) component image of a marker (eg, a white marker) and a complementary color component image of the first color of a normal image, and

[0043] The second image is a composite of the complementary color component image of the first color of the marker and the first color component image of the normal image.

[0044] For a given full-color image, a first color (eg, r...

Embodiment 3

[0046] This embodiment is a modification of Embodiment 1. Embodiment 1 relates to an image processing system that computes a differential image between two sequentially captured images, where the first image is a black blank image (the blank image is all pixel values same image) and the marked image, and the second image is a modified normal image, where the modification means that the brightness of the area corresponding to the marked is reduced. In contrast, this embodiment sequentially displays a black blank image followed by a normal image instead of displaying a modified normal image, where the modification means that the brightness of the area corresponding to the mark is reduced. (The order of display can be changed. That is, a dark blank image can be displayed after a normal image is displayed.) In other words, this embodiment relates to an image processing system that alternately and rapidly displays three kinds of images (marker images , blank image, and normal imag...

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Abstract

Disclosed is an image processing apparatus for rapidly and safely recognizing an outputted mark onto a display. The image processing apparatus according to one embodiment of the present invention, includes: a display that alternately outputs a first image and second image; a camera that captures the two images; and an image processing means that detects a mark in a region, of which the pixel value is not 0, in a differential image of the first image and second image captured by the camera, wherein the image includes the first image that includes a mark, which specifically uses ¾ of the differential camera.

Description

technical field [0001] The present invention relates to a technique for quickly detecting a mark from a non-zero pixel area of ​​a difference image between a previous frame and a current frame, wherein the previous frame contains a mark and the current frame does not contain a mark. Background technique [0002] Marker recognition, pointing, mouse, augmented reality, camera, differential image, image processing Contents of the invention [0003] technical problem [0004] Recently, a technique of capturing by a camera and recognizing the pointing of a mouse cursor icon in a monitor from the captured image has been developed. It is an object of the present invention to provide a fast and stable system that can detect mouse cursor icons among complex background images. [0005] Another object of the present invention is to solve the problem that the system may mistake an object for a mouse cursor icon when the camera does not capture the mouse cursor icon in the monitor bu...

Claims

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Application Information

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IPC IPC(8): G06K9/18G06K9/74G06K9/00G06V30/224
CPCG06K9/00G06T2207/30204G06T7/254G06T7/00G06V10/40G06V2201/02G06V2201/07G06F18/00H04N23/00G06T1/0007G06T2207/10004G06T2207/10024G06T2207/20101
Inventor 李汶基
Owner 李汶基
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