Range finding method and device
A distance-measuring method and technology of a distance-measuring device, applied in image data processing, complex mathematical operations, instruments, etc., can solve the problems of inconvenient operation, high measurement cost, and inconvenience of carrying around, and achieve high accuracy and wide application range Effect
Active Publication Date: 2019-09-13
HUAWEI TECH CO LTD
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[0002] At present, there are mainly the following ways to measure the distance between two points in space: one is to use traditional measuring tools such as rulers and tapes for manual measurement, which is inconvenient to carry around because of the need to carry rulers and tapes with you. And when the measurement distance is large (such as 10 meters), the operation of this method is more inconvenient; the other is to use infrared, laser or ultrasonic measurement tools to calculate the distance by calculating the time difference spent by the reflected signal. It is also necessary to carry measurement tools with you, and the measurement tools are usually precision electronic instruments, and the measurement cost is relatively high
It can be seen that in the prior art, when measuring the distance between two points, it is usually necessary to use professional measuring tools. When the user does not carry the above-mentioned professional measuring tools with him, the measurement may not be completed
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[0064] The present application will be described in detail below in conjunction with the accompanying drawings, and the specific operation methods in the method embodiments can also be applied to the device embodiments.
[0065] In the prior art, it is usually necessary to use professional measuring tools to measure the distance between different objects, thus causing inconvenience to users. Considering that terminal devices such as mobile phones have almost become necessities that people carry with them, if these terminal devices are used to measure distance, users no longer need to carry professional measuring tools.
[0066] At present, a solution for using mobile phones to measure distances is: to pre-establish the corresponding relationship between the zoom ratio of the mobile phone camera and the camera parameters. When the user needs to know the actual geographical location distance of the target, for example: the actual distance between two mountain peaks You can use t...
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The invention discloses a range finding method and device. The method comprises the steps of obtaining a target image and a parallax image or a depth image corresponding to the target image, and further performing point cloud conversion on the parallax image or the depth image to obtain a point cloud image; and according to the point cloud image and the first image point and the second image pointin the target image, obtaining a three-dimensional coordinate of a first scene point corresponding to the first image point and a three-dimensional coordinate of a second scene point corresponding tothe second image point, and obtaining a spatial distance between the first scene point and the second scene point. Through the mode, the range finding method provided by the embodiment of the invention does not need a professional measurement tool, and range finding can be simply and conveniently completed on the basis of not increasing the hardware cost of the terminal equipment.
Description
technical field [0001] The present invention relates to the technical field of terminals, in particular to a ranging method and device. Background technique [0002] At present, there are mainly the following ways to measure the distance between two points in space: one is to use traditional measuring tools such as rulers and tapes for manual measurement, which is inconvenient to carry around because of the need to carry rulers and tapes with you. And when the measurement distance is large (such as 10 meters), the operation of this method is more inconvenient; the other is to use infrared, laser or ultrasonic measurement tools to calculate the distance by calculating the time difference spent by the reflected signal. It is also necessary to carry a measurement tool with you, and the measurement tool is usually a precision electronic instrument, and the measurement cost is relatively high. It can be seen that, in the prior art, when measuring the distance between two points,...
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CPCG06T2207/10028G06T7/50G06T7/70G06T7/97G06T17/00G06F17/16G06T7/593
Inventor 张旭马超群
Owner HUAWEI TECH CO LTD