What Is a Portable Document Camera?

High-definition cameras are digital cameras that can produce high-quality, high-definition images with a resolution of 720-line progressive scanning and a resolution of 1280 * 720, or 1080-line interlaced scanning with a resolution of 1920 * 1080.

HD camera

HD cameras, that is, can be high

A. High image clarity

High-definition IP network camera, which adopts a 5-megapixel progressive scan CMOS image sensor with a resolution of 720P (1280 * 720 resolution) / 1080P (1920 * 1080 resolution) full real-time broadcast image quality Higher than traditional CCD

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1.Using megapixel sensors, more video information can be obtained, generally reaching resolutions of 1280 × 1024, 1392 × 1024, 1628 × 1236 or even 2048 × 1536;

2. The image display quality is higher, which can better capture the details;

3. Progressive scanning CCD / CMOS dynamic picture performance is smoother;

4. Support widescreen output mode of HDTV (16: 9);

5, the coverage is wider, the same surveillance area can replace the original multiple fixed-point cameras and an all-round camera.

The definition of the camera depends on the performance of the Sensor. Compared with the two CMOS sensor chips, CCD sensors are superior to CMOS in terms of sensitivity, resolution, noise control, high-quality image output, and dynamic image performance, so most of them are professional The camera still chooses CCD as the photosensitive chip, and the Sony's highest-grade ICX series photosensitive chip selected for high-definition megapixel network cameras has ultra-low sensitivity illumination to obtain clearer images in dark environments, which cannot be achieved by ordinary cameras.