Sony FCB camera block
Wide dynamic range, WDR,.After the security sensor entered the CMOS era, wide dynamic is also known as HDR, that is, High-Dynamic Range. In particular, the film and television industry, the display field, mobile phone screens, photography and videography are generally called HDR. The security industry also refers to wide dynamics as HDR, which is in line with these industry areas.
The wide dynamic of the auto focus camera is that the particularly bright part and the particularly dark part of the scene can be seen particularly clearly at the same time, and the wide dynamic range is the ratio of the image to the brightest brightness signal value and the darkest light signal value.
When the high brightness area under the strong light source (daylight, lamps or reflections, etc.) and the relatively low brightness area such as shadow and backlight exist in the image at the same time, the camera output image will appear bright areas become white due to overexposure, and the dark area becomes black due to underexposure, which seriously affects the image quality.
There are limitations to the performance of the brightest and darker areas of the same scene in an autofocus camera, which is commonly referred to as “dynamic range”. Wide motion is the use of multiple images with different exposures, and then use software to combine them into a single image. The advantage is that you end up with a picture that has HD detail both in the shadows and in the highlights. SONY FCB-EV9520L uses STARVIS 2 CMOS Sensor, has a higher dynamic range of wide dynamic, it is the use of the brightest exposure, middle exposure and darkest exposure three pictures combined into a picture, the combined picture can present more real details.
A wide motion camera with a high dynamic range usually works by taking multiple images of different exposures at the same time and combining these images to obtain a final image with a wider brightness range. This technique is called multi-exposure or multi-frame synthesis.
Using a wide motion camera with a high dynamic range offers the following advantages:
Preserve details: High dynamic range cameras can capture details of darker and brighter areas in the same frame, avoiding the problem of overexposure of the light or invisible details in the dark.
Natural images: Because of the ability to better reproduce the brightness differences in real scenes, the images captured by high dynamic range cameras are closer to the scene seen by the human eye, with more natural colors and shades.
Improve contrast: High dynamic range cameras can improve the contrast of images, resulting in sharper image details and more vivid colors.
The wide motion of autofocus camera is widely used in industrial inspection, video conferencing, security monitoring and other fields. They provide higher quality, more realistic image representation.