STEREO VISION SYSTEM AND CONTROL METHOD THEREOF
First Claim
1. A stereo vision system comprising left and right stereo cameras, the stereo vision system comprising:
- an image information extracting unit receiving left and right images of the left and right stereo cameras to extract color information for a brightness control of the images from the received images;
an image preprocessing unit performing a process for reducing noises of the left and right images using the color information and a prestored calibration parameter;
a stereo matching unit performing stereo matching of the left and right images processed by the image preprocessing unit through an algorithm to obtain a depth map; and
a matching result measuring unit receiving the depth map obtained by the stereo matching unit to measure a matching degree, and changing the prestored calibration parameter according to a result of the measurement.
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Abstract
Provided are a stereo vision system and a control method thereof. A stereo vision system includes an image information extracting unit receiving left and right images of the left and right stereo cameras to extract color information for a brightness control of the images from the received images, an image preprocessing unit performing a process for reducing noises of the left and right images using the color information and a prestored calibration parameter, a stereo matching unit performing stereo matching of the left and right images processed by the image preprocessing unit through an algorithm to obtain a depth map, and a matching result measuring unit receiving the depth map obtained by the stereo matching unit to measure a matching degree, and changing the prestored calibration parameter according to a result of the measurement.
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Citations
15 Claims
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1. A stereo vision system comprising left and right stereo cameras, the stereo vision system comprising:
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an image information extracting unit receiving left and right images of the left and right stereo cameras to extract color information for a brightness control of the images from the received images; an image preprocessing unit performing a process for reducing noises of the left and right images using the color information and a prestored calibration parameter; a stereo matching unit performing stereo matching of the left and right images processed by the image preprocessing unit through an algorithm to obtain a depth map; and a matching result measuring unit receiving the depth map obtained by the stereo matching unit to measure a matching degree, and changing the prestored calibration parameter according to a result of the measurement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for controlling a stereo vision system comprising left and right stereo cameras, the method comprising:
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extracting color information for a brightness control of an image when left and right images of the left and right stereo cameras are input; generating a histogram of the images through the extracted color information, smoothing the generated histogram, and equalizing average values of the left and right images; performing image rectification which makes an epipolar line of the left image in accordance with an epipolar of the right image using a prestored calibration parameter after the generating and smoothing of the histogram; performing stereo matching of the left and right images processed in the generating and smoothing of the histogram and the performing of the image rectification through an algorithm to obtain a depth map; and receiving the obtained depth map to measure a matching degree, and changing the prestored calibration parameter according to a result of the measurement. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification