According to Nikkei Asia, Canon is set to kick-start the digital imaging industry next year with a Canon’s New Sensor Captures Full-Color Images in Near Total Darkness at “one-tenth of the traditional brightness sensors required.” This could drive systems autonomous and even revolutionize security systems.
Photography is not impossible in low-light situations, including near-dark, but it requires special techniques that come with their own compromises. The easiest solution is to mount a camera with strong support such as using tripods and long shutters, but this is a practical solution for applications that require video capture, or when analyzing a stream of images in real time. It is also an option to boost the sensitivity of a camera sensor (referred to as its ISO), which allows images to be captured in the dark with fast shutter speed, but this technique introduces a lot of noise into the final results which can hide fine detail.
The most common solution for low-light photography is to rely on night vision technology that replaces the light that falls in the visible spectrum with infrared light. It results in high contrast images where objects and finer details are easily recognizable. But there is no information on color, which is what Canon is trying to cure with its new sensors.
Canon’s new mass – produced sensor is based on technology that the company improved back in 2020 that allows it to capture 1 – megapixel images using a Single Photon Avalanche Diode (or SPAD for short). Conventional sensors produce images based on the number of photons detected by each pixel over time – the more light and photons available, the better the results. But a SPAD sensor uses an electronic element in each pixel that can multiply and generate an electric pulse when it is only hit by one photon (the effect multiplies like a motion, hence the name), giving much greater sensitivity burning in almost complete darkness.
It’s an approach to sensors that has been around for years, but Canon’s latest development, according to Nikkei Asia, is that the company has created a 3.2 million pixel SPAD sensor, which would make It’s the closest in the world, and would eventually be useful in producing high quality color images even in the dark. But that’s not a neat trick for the SPAD sensor. It is able to determine the distance to a particular object based on the time it takes for light to travel to it, to reflect and to return. This data can be processed to calculate space in three dimensions and generate models of its contents around a device with the sensor installed. As a result, while Canon’s new sensor will initially be used in the company’s security and surveillance camera offerings, it will also have useful applications for autonomous propulsion and navigation systems as the demand for self – driving vehicles increases. in the coming years.
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