Method for estimating actual size of object and real object projector

A technology of actual size and projector, which is applied in the direction of instruments, optics, camera body, etc., which can solve the problems of user inconvenience and easy to cause errors

Active Publication Date: 2010-07-07
AVER INFORMATION INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The object of the present invention is to provide a method for estimating the actual size of an object and a real object projector, so a

Method used

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  • Method for estimating actual size of object and real object projector
  • Method for estimating actual size of object and real object projector
  • Method for estimating actual size of object and real object projector

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Embodiment Construction

[0061] Through the above instructions (such as figure 1 As shown), it can be known that when the existing physical projector 10 displays the digital image of the object to be measured 11 through a display device, although the image pictures such as the appearance of the object to be measured 11 are presented in front of the user's eyes, it cannot let the user Knowing the actual size of the object 11 to be measured, even if some real object projectors 10 provide relevant display technology, the method is quite inconvenient and prone to errors. For this reason, the present invention develops a method for automatically estimating the actual size data of the object to be measured on the physical projector 20, which can provide the user with the function of selecting the length or area in addition to the defect that the additional scale must be used when using it. , allowing the user to select the range in the digital image with an intuitive operation and correspondingly convert it...

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Abstract

The invention discloses a method for estimating the actual size of an object and a real object projector having a function of estimating the actual size of the object, which are used for observing images of an object to be tested. The method for estimating the actual size of the object comprises the following steps of: performing an object distance estimating procedure to obtain an object distance between a lens of the real object projector and the object to be tested; estimating size data of a photographable image area according to a viewing angle of the object distance and the lens; using the lens and an image sensor to capture the object to be tested so as to generate a digital image; counting the quantity of effective pixel points corresponding to a plurality of marking points in the digital image; and estimating data of an actual size corresponding to the plurality of the marking points according to the quantity of the effective pixel points, the quantity of the pixel points of the image sensor and the size data of the photographable image area. The method and the real object projector overcome the defects that correlative measurements and display practices in the prior art are very inconvenient and can cause errors easily for users.

Description

technical field [0001] The present invention relates to a method for estimating the actual size of an object and a physical projector, in particular to using the proportional relationship between the size data of the photographable image area and the number of pixels of an image sensor as the method for estimating the actual size of an object and the projector with the function of estimating the actual size of an object Physical projector. Background technique [0002] The Document Camera intercepts the image of the object to be measured, such as a plane or a three-dimensional object, through a lens and an adjustable mechanical structure, and then displays the digital image of the object to be measured through a display device for the user to watch. The projector can also store or share the image of the object under test with different users. [0003] See figure 1 , which is a schematic diagram of the object projector 10 capturing and displaying images of the object 11 to ...

Claims

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Application Information

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IPC IPC(8): G03B17/54
Inventor 林士强黄钰珊张兆宏刘轩宏
Owner AVER INFORMATION INC
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