Low-light imaging system
A low-light image, imaging unit technology, applied in traffic control systems, CCTV systems, components of TV systems, etc., can solve the problems of affecting imaging sensors, impossible, difficult to accurately capture visible light, etc.
Active Publication Date: 2021-07-16
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
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
| Property | Measurement | Unit |
|---|---|---|
| Wavelength | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a low-light imaging system. A traffic monitoring system for generating a low-light image of a set of objects comprising at least one road and at least one traffic signalling light, the traffic monitoring system comprising a camera and a processing unit, wherein: the camera being configured to generate a first image comprising a set of pixels, each pixel of the set of pixels comprising colour encoding values corresponding to a pixel colour, a saturation value, and a luma value, and the processing unit being configured to, for each pixel of the set of pixels: where the pixel colour corresponds to one of a first set of colours, modify the colour encoding values to reduce the saturation value of the pixel, and where the pixel colour corresponds to red and where the luma value of the pixel is below a first threshold value, modify the colour encoding values to reduce the saturation value of the pixel, where the pixel colour corresponds to red and where the luma value of the pixel is equal to or above the first threshold value, preserve the saturation value of the pixel, and generate the low-light image of the set of objects in dependence on the modified colour encoding values 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
Login to View More IPC IPC(8): G02B13/00G02B9/36G02B1/02G02B1/04
CPCG02B13/00G02B9/36G02B1/02G02B1/04H04N23/80H04N23/12G08G1/075G08G1/095H04N5/33H04N7/18H04N9/68
Inventor 平山真吾
Owner AXIS