Correction method of projected image and laser projection system
A projection image and laser projection technology, which is applied in the field of projection display, can solve the problem of low reliability of projected images and achieve the effect of improving reliability
Active Publication Date: 2022-07-12
QINGDAO HISENSE LASER DISPLAY CO LTD
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[0005] The embodiments of the present disclosure provide a projection image correction method and a laser projection system, which can solve the problem that in the related art, when the ambient light is strong, the feature points in the projection image may be covered, resulting in low reliability of projection image correction. low problem
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[0028] In order to make the objectives, technical solutions and advantages of the present disclosure clearer, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.
[0029] In related art, refer to figure 1 , the background color of the projected image projected and displayed by the laser projection device may be white, and the color of the feature point 00 in the projected image may be black. The feature point 00 in the projected image will be covered by ambient light 01 (such as light or strong light such as light shining from a window to the projected image), and the laser light source emitted by the laser projection device will present ribbon noise in the projected image (that is, color shadow). refer to figure 2 , the background color of the projected image projected and displayed by the laser projection device is black, the color of the feature point 00 in the projected image is white, and the ...
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The application discloses a correction method of a projected image and a laser projection system, which belong to the technical field of projection display. The method includes: projecting and displaying a first projection image on a projection screen in response to a correction instruction; acquiring a first captured image obtained by capturing the first projection image and the projection screen by a camera; projecting and displaying a second projection image onto the projection screen Obtain the second photographed image obtained by the camera through the filter to photograph the second projection image and the projection screen; According to the relative position of the feature pattern in the second photographed image and the frame of the projection screen in the first photographed image, correct The projection position of the second projection image. Since the second captured image in the present application is captured by the camera through the filter, the filter can filter out the light whose color is different from that of the feature pattern, reducing the effect of ambient light on the features in the second captured image. The influence of the graphics improves the reliability of the correction of the projected image.
Description
technical field [0001] The present disclosure relates to the field of projection display, and in particular, to a correction method of a projected image and a laser projection system. Background technique [0002] The laser projection system may include a laser projection device and a projection screen, the laser projection device being used to project and display the projection image onto the projection screen. When the projected image exceeds the projection screen, the laser projection device needs to correct the projected image until the projected image is located within the projection screen, so as to ensure the display effect of the projected image. [0003] In the related art, the laser projection system further includes a camera. In the process of calibrating the projected image, the laser projection device can control the camera to capture the projected image and the projection screen to obtain a captured image. The projected image displays feature points, the backg...
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IPC IPC(8): H04N9/31
CPCH04N9/3161H04N9/3185H04N9/3182
Inventor 张冬冬
Owner QINGDAO HISENSE LASER DISPLAY CO LTD