Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and device for determining field of view of linear array camera

A technology of a line scan camera and a determination method, which is applied in the direction of television, electrical components, image communication, etc., can solve the problems of low efficiency, high operation requirements, complex device structure, etc., and achieves the effects of high efficiency, simple operation, and simple device structure.

Active Publication Date: 2017-12-26
XIAN TECH UNIV
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method and device for determining the field of view of a line array camera to solve the problems of complex device structure, high operation requirements and low efficiency in the background technology

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for determining field of view of linear array camera
  • Method and device for determining field of view of linear array camera
  • Method and device for determining field of view of linear array camera

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] see figure 1 and figure 2 , Embodiment 1 of the present invention provides a device for determining the field of view of a linear array CCD camera, including a laser 2 capable of emitting fan-shaped "one" word line laser as shown, which is a small-volume semiconductor laser with a wavelength of 650nm and a power of 25mW. Panel 4 with retroreflective film 5. The laser 2 is clamped on the adjustment mechanism 3, the laser emission direction is consistent with the object side of the camera to be tested, and the fan-shaped "one" line laser light curtain 7 is in the same direction as the imaging projection surface 6 of the line array camera 1 to be tested. The panel 4 is placed about 2 meters from the object space of the line scan camera 1, with a height of 400mm and a width of 800mm, which is much larger than the field of view of the line scan camera 1 at the current distance. One side of the reflective film 5 faces the laser 2 .

[0035]The adjustment mechanism 3 has t...

Embodiment 2

[0045] Embodiment 2 of the present invention provides a device and method for simultaneously determining the field of view of two line array cameras, thereby making the fields of view of multiple line array cameras coplanar. In some applications, one line scan camera cannot cover the entire field of view, and two or more cameras are required for intersection testing, so it is necessary to adjust the coplanar field of view of two or more cameras to ensure that the same scene captured at the same time image. Embodiment 2 takes two line scan cameras as an example to provide a device and method for realizing this purpose.

[0046] see Figure 5 , Embodiment 2 of the present invention provides a device for determining the field of view of two linear array CCD cameras. The laser 2 that can emit fan-shaped "one" word line laser is a small-volume semiconductor laser with a wavelength of 650nm and a power of 25mW. The panel 4 of the reflective film 5 . The two adjustment structures ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method and device for determining a field of view of a linear array camera. The device comprises a line laser, a linear array camera to be measured and a panel placed in an object field of the linear array camera to be measured; the laser is arranged on a regulating mechanism capable of regulating the translation, rotation, and pitching of the laser; and the panel 4 is pasted with a retro-reflecting film. The method comprises the following steps: placing the panel pasted with the retro-reflecting film in the object field of the linear array camera to be measured, covering the imaging range of the linear array camera at the position, adjusting the position and angle of the laser, and adjusting images acquired by the linear array camera to be measured, wherein when the linear array camera acquires the brightest images with the maximum range, the projection of a laser screen covers the linear field of view of the linear array camera. The method and the device for determining the field of view of the linear array camera provided by the invention have the following advantages: the method is simple and the conception is ingenious; the device is simple in structure, the operation is simple and the efficiency is high; and the scope of application is wide.

Description

technical field [0001] The invention relates to the technical field of line array camera parameter testing, in particular to a method and device for determining the field of view of a line array camera. Background technique [0002] The photosensitive surface of a line-scan camera is a linear array. The current sensor types of line-scan cameras are mostly CCD or CMOS. Each time an image is taken, a row of images is obtained. This row of images is a linear surface in space through an optical lens. projection on . Compared with area scan cameras, line scan cameras can have more pixels in one dimension and can achieve higher sampling rates. At present, industrial line scan cameras with 2K and 4K pixels are relatively common, and line scan cameras with 8K and 10K pixels have also been used in many fields. Such resolution is difficult to achieve with current area scan cameras. In some occasions, the one-dimensional high-resolution characteristics of the line scan camera can eff...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04N17/00
CPCH04N17/002
Inventor 马卫红蔡长龙张增康
Owner XIAN TECH UNIV