Camera device for ranging and ranging method
A technology of a shooting device and a distance measurement method, which is applied in the fields of distance measurement and optical distance measurement, and can solve problems such as disrupting light patterns, working range limitations, errors, etc., and achieve the effect of uniform illumination and meeting illumination requirements
Active Publication Date: 2015-04-08
GUANGZHOU SHENGGUANG MICROELECTRONICS
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Also, the edges of the target object can disrupt the light pattern cast on itself, causing errors
Since only one configuration of light is available, longer distances cannot be measured using this method, and its working range is limited
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[0050] Below in conjunction with accompanying drawing, specific embodiment of the present invention will be further described:
[0051] Such as figure 1 with figure 2 As shown, a shooting device for distance measurement includes a lens group 1 , a sensor module 3 , an illumination module 2 and an image processing unit 5 .
[0052] The lens group 1 includes multiple lenses, and multiple lenses work together to improve the clarity of the image. All camera lenses are arranged into a lens surface. The lens surface can be a flat surface, a curved surface with a radian, or a composite surface spliced by several planes with a certain angle. It depends on the specific situation of the target object. The camera lenses can be closely arranged or have certain gaps, as long as a lens surface is formed. A plurality of lenses are fixed into one lens surface through integral molding or splicing.
[0053] Using multiple lenses, because different lenses have different viewing angles, it ...
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The invention discloses a camera device for ranging. The camera device for ranging comprises an illumination module, a lens set, a sensor module and an image processing unit. The invention also discloses a ranging method which comprises the following steps: firstly, monochromatic lights in different colors irradiate on a target object from different angles, wherein lights in the same color are emitted in a diffused manner; secondly, the camera device shoots the target object, and a sensor converts an optical signal image to an electric signal image; and thirdly, the image processing unit receives the electric signal image and compares the spectral characteristics of the electric signal image with the pre-recorded spectral characteristics so as to analyze the spatial position where the target object is located. According to the invention, each of the monochromatic lights irradiates on the surface of the target object, and the camera device shoots the target object to obtain an image, so that relative positions can be calculated with pixel highlights corresponding to each point of the target object in the image, and the limitation that the traditional ranging method can only measure the position of one point each time can be broken through.
Description
technical field [0001] The invention relates to the field of optical distance measurement, in particular to a photographing device for measuring distance, and the invention also provides a distance measurement method. Background technique [0002] In technology research and development, industrial applications and daily applications, there are more and more demands for accurate distance measurement of target objects. [0003] These two methods are commonly used in the existing optical measurement technology to achieve distance measurement. One is a laser rangefinder. The principle of laser rangefinder is that the laser emits laser light to irradiate the object. By receiving the laser signal diffusely reflected from the surface of the object, the distance of the target is determined by calculating the propagation time of the laser. This method uses the distance calculated by calculating the reentry time of the medium. Due to the irregular shape of the target object and the d...
Claims
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IPC IPC(8): G01C3/00
Inventor 于燕斌
Owner GUANGZHOU SHENGGUANG MICROELECTRONICS