Reticle, digital image water level and image identification method

Abstract

The invention relates to a reticle, a digital image water level and an image identification method. The digital image water level comprises a machine body, a light sensing component which is arranged on the machine body, and the reticle which is arranged on the machine body and positioned in front of the light sensing component; the reticle comprises at least one marked pattern; the marked pattern has a first color area and a second color area which are light-proof; and the first color area and the second color area are adjacent to each other and have different colors. The invention has the advantages that: an image to be shot can be shot by the light sensing component without light splitting; and the shot image is an image having the marked pattern and serves as an image reference point for subsequent image processing.

Description

technical field [0001] The invention relates to a level, in particular to a digital image level. Background technique [0002] refer to figure 1 , 2 , 3, the existing level 1 is suitable for shooting the leveling rod 100 erected at the location to be measured, and includes a body 11, an object lens 12, a magnifying glass group 13, and a dichroic prism arranged at intervals in the body 11 along the axis L 14. A light-transmitting reticle 15 and an eyepiece lens 16, and a photosensitive element 17 arranged above the dichroic prism 14 along a vertical direction H perpendicular to the axis L. The reticle 15 is circular and has vertical marking lines 151 and horizontal marking lines 152 . [0003] When shooting, the image of the leveling rod 100 enters from the objective lens 12, and when passing through the magnifying glass group 13, it is magnified, and after entering the beam splitting prism 14, two spectroscopic images perpendicular to each other are produced, wherein one ...

AI Technical Summary

Problems solved by technology

[0005] refer to figure 1 , 2 , 4. However, since the spectroscopic image imaged on the photosensitive element 17 does not pass through the reticle 15, the image taken does not have the horizontal marking line 152, so that when performing subsequent image processing, it is necessary to include Image recognition of the entire surface of the leveling rod 100 and the background pattern (not shown) is not only a waste of time, but it is also easy to cause image misjudgment or inability to distinguish the image due to the background pattern

[0006] In addition, since the brightness of the spectroscopic image generated by the dichroic prism 14 is only half of the brightness of the original image, no matter when the user observes, or the image finally captured will be relatively dark, resulting in subsequent images Difficulty in identifying

[0007] In addition, in order to allow the image observed by the user to be the same as the captured image, the level 1 must be precisely controlled during production so that the distances between the dichroic prism 14 and the photosensitive element 17 and the reticle 15 are the same, so that The correction work of the product is more difficult, thereby adding additional production costs

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