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

Low light imaging system

A low-light image and imaging unit technology, applied in traffic control systems, closed-circuit television systems, TV system components, etc., can solve problems such as difficulty in accurate capture of visible light, difficulty in color representation, and impossibility

Active Publication Date: 2022-05-03
AXIS
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

IR cut filters are useful for imaging daytime scenes where NIR light can affect the imaging sensor and make accurate capture of visible light more difficult
Accurate color representation may be difficult or impossible for imaging low-light scenes

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
  • Low light imaging system
  • Low light imaging system
  • Low light imaging system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The present description relates to devices and techniques for providing improved low-light imaging of scenes. Throughout the description, the same reference numerals are used to identify corresponding elements.

[0025] figure 1 is a diagram of an example of the imaging unit 100 and the traffic scene 21 . In one example, imaging unit 100 is part of traffic monitoring system 200 . The imaging unit 100 includes a camera 110 , a processing unit 120 , and may further include a non-transitory computer readable medium 130 . The camera 110 has a field of view 15 and an image sensor configured to generate a first image 20 from light received at the image sensor. Image sensors may include visible light sensors (e.g., semiconductor charge-coupled devices (CCD), active pixel sensors in complementary metal-oxide-semiconductor (CMOS), or N-type metal-oxide-semiconductor (NMOS, Live MOS) sensors) one or a combination of them. The field of view (FOV) 15 of the camera 110 is defin...

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

PropertyMeasurementUnit
wavelengthaaaaaaaaaa
Login to View More

Abstract

A low-light imaging system is disclosed. A traffic monitoring system for generating a low-light image of a group of objects including at least one road and at least one traffic light includes a camera configured to generate a first image including a group of pixels, each pixel of which includes a Color-encoded values ​​corresponding to the pixel color, saturation value, and brightness value, the processing unit being configured to, for each pixel of the pixel group: modify the color-encoded value if the pixel color corresponds to one of the first color group value to reduce the saturation value of the pixel, and modify the color-encoded value to reduce the saturation value of the pixel if the pixel color corresponds to red and the brightness value of the pixel is below the first threshold, where the pixel color corresponds to red And when the brightness value of the pixel is equal to or higher than the first threshold, the saturation value of the pixel is kept, and the low-light image of the object group is generated according to the modified color coding value of the first image.

Description

Background technique [0001] A well-known camera configuration for imaging well-lit scenes (eg, daytime scenes) and low-light scenes (eg, night-time scenes) is a camera configuration with a removable IR (infrared) cut filter. An IR cut filter is a filter that removes light having a wavelength greater than 700 nanometers (for example, near-infrared light or NIR light). IR cut filters can be used to image daytime scenes where NIR light can affect the imaging sensor and make accurate capture of visible light more difficult. For imaging low-light scenes, accurate color representation can be difficult or impossible. So instead it is a priority to capture as much light as possible and remove the IR cut filter. This ensures that the amount of light reaching the light sensor is maximized. [0002] In an important use case for low-light cameras, nighttime traffic scenes are imaged to capture and record the movement of vehicles in the scene. Since vehicles moving in a scene typically...

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 Patents(China)
IPC IPC(8): G02B13/00G02B9/36G02B1/02G02B1/04H04N23/12
CPCG02B13/00G02B9/36G02B1/02G02B1/04H04N23/80H04N23/12G08G1/075G08G1/095H04N5/33H04N7/18H04N9/68
Inventor 平山真吾
Owner AXIS