Technical requirements for the camera in

The document scanner has many technical requirements for the camera, mainly including the following aspects:

Pixel resolution: There are usually options such as 5 million, 10 million, 16 million pixels, or even higher pixel choices. For example, million pixels correspond to a resolution of about 2592×1944dpi, which can meet the shooting needs of general office documents; above 0 million pixels, such as reaching 4320×3240dpi, it is suitable for scenarios with high image quality requirements.

Color bit depth: Generally, a color bit depth of 24 bits or more is required, which can accurately restore the color information of the document, ensuring that the shooting effect of documents, pictures, etc., is lifelike and there is no color difference when observed with the naked eye.

Focusing method:ocus can quickly and clearly capture documents at different distances, ensuring that there is no need to manually adjust frequently during shooting. Some high-speed document scanners also support manual focusing which is convenient for users to make fine adjustments according to special needs.

Depth of field: A larger depth of field range can ensure that documents of different thicknesses are imaged in the same picture, such as a depth of field range from a few tens of centimeters to several meters, which can meet the needs of different stackinges of documents and different shooting distances.

Imaging speed: Generally, it is required that the imaging speed is fast, usually around 1 second or shorter, to the scanning efficiency and achieve rapid continuous shooting and dynamic shooting.

Optical lens: It is composed of multiple groups of lenses, which been precisely calibrated and coated to reduce problems such as light reflection, chromatic aberration, and distortion, ensuring the clarity and accuracy of the image. The aperture can the amount of light entering, affecting the brightness of the picture and the depth of field.

Auxiliary lighting technology: Equipped with LED auxiliary lighting, it can provide and stable light, ensuring that clear shooting can also be achieved in environments with insufficient light. Auxiliary lighting usually has a brightness adjustment function, and some also support automatic auxiliary, which can automatically adjust the brightness according to the ambient light.

Image processing function: It has functions such as automatic shadow removal, black removal, gray background removal, edge compensation, automatic alignment, and automatic skew correction, making the document images shot more regular and clear.

Image stability: Under different light and shooting environments, it is necessary to ensure that there are no flicker, ripple, noise, and other issues that can be recognized by the naked eye, and light changes do not affect image quality.

Transmission interface: The common ones are USB2.0, USB3.0 interfaces, USB30 interface has a faster data transmission speed, which can meet the fast transmission needs of high-resolution images and videos, and is backward compatible with USB2.0.

system compatibility: It needs to support common operating systems, such as Windows XP, Windows Vista, Windows7/8/10, UOS, OpenHarmony etc., to adapt to the device environment of different users.