Adaptive algorithm for full-color night vision white light lamp
An adaptive algorithm and white light technology, applied in the field of electronic information, can solve problems such as insufficient size, abnormalities, and restrictions on equipment usage scenarios
Pending Publication Date: 2021-09-14
HANGZHOU CLOSELI TECH CO LTD
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Problems solved by technology
There will be a problem that if the device is in a very low indoor brightness environment, it will frequently try to turn off the white light during 6:00-18:00, but the brightness will never be large enough because of the low indoor illumination;
[0008] 3: The above logic design is extremely complicated and cumbersome and cannot achieve the desired design effect
Constrained by time and seasons, and limited by equipment usage scenarios
For example, if it is placed in a basement that never sees the sun, or aisles that are only illuminated for a certain period of time throughout the day, the full-color night vision function of the device will be abnormal. In view of this, an adaptive algorithm for full-color night vision white light is proposed.
Method used
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Embodiment
[0035] Embodiment: The present invention is based on a constant quantity in the control system. When the camera wants to maintain the brightness of the acquired color image, we propose that the value of its corresponding photosensitive sensor is 1000, wherein the value range of the photosensitive sensor is 0-5000 , 0 is the minimum illuminance and 5000 is the maximum illuminance. How does the external light change? We only need to adjust the white light to keep the light sensitivity value greater than 1000 in the environment where the device is located. Brighten to supplement the light, the white light gradually dims from night to day, and always keep the light sensitivity value greater than 1000 to maintain the color of the image, so as to achieve intelligent full color.
[0036] 1: First of all, the white light of the device has only two states of on and off. It is controlled by a pin of the CPU. When the pin is pulled up to 1, the white light is turned on, and when the pin i...
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The invention discloses an adaptive algorithm for a full-color night vision white light lamp. The method comprises the following steps: 1, starting a photosensitive sensor to sample and generate pwm waves; 2, adopting a filtering algorithm to process and calculate pwm of the data, and adjusting the step N; 3, judging whether the photosensitive value is greater than 1000 or not; 4, when the photosensitive value is smaller than 1000, adding N to the duty ratio of the pwm, and executing the first step again; 5, when the photosensitive value is larger than 1000, reducing N from the duty ratio of the pwm, and repeating the second step and the first step in sequence. The method solves the logic endless loop when the daytime enters the night under the previous control logic, solves the problems that when the real daytime comes when the white light lamp is turned on at night under the previous control logic, the full-color image is more stable, and image flicker caused by sudden brightness change when the previous control logic is suddenly turned on and turned off does not exist, and saves energy consumption, and the control of the brightness of the white light lamp can reduce the use cost of equipment, save electric energy and work stably.
Description
technical field [0001] The invention relates to the technical field of electronic information, in particular to an adaptive algorithm for a full-color night vision white light lamp. Background technique [0002] There are two types of current surveillance cameras according to the night vision mode: [0003] 1: The image is colored during the day, and the infrared image is black and white when the infrared image is turned on at night [0004] 2: Image color during the day, turn on the white light (that is, for supplementary light) image color at night to achieve full-color night vision [0005] There is currently a big design flaw for the full-color night vision camera; [0006] 1: For example, from a daytime scene to a nighttime scene, the photosensitive sensor senses that the brightness value becomes smaller. According to the logic of the design, the white light should be turned on. Once the white light sensor is turned on, it will think that the photosensitive value is v...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H04N5/225H04N5/235H04N5/232H04N5/33H04N9/04
CPCH04N5/33H04N23/56H04N23/667H04N23/71H04N23/74H04N23/10
Inventor宋志良蒋泽飞夏虹
OwnerHANGZHOU CLOSELI TECH CO LTD