What is the principle of computer imaging?

Computer imaging is a process of converting image information into digital signals through electronic equipment, and then processing and displaying them to form images that can be directly observed by human eyes.

1. Digital imaging is to convert optical image signals into electrical signals (analog signals) through photoelectric conversion devices, then into digital signals through analog-to-digital converters or A/D converters, and finally processed and presented through digital signal processors and displays.

2. The process of digital imaging mainly includes four stages: image acquisition, signal processing, compression transmission and display. Among them, the image acquisition stage is mainly completed by optical imaging system and sensor, which converts optical image signals into electrical signals; The signal processing stage mainly includes preprocessing, enhancement and restoration to improve the image quality. In the stage of compression and transmission, the amount of image data is mainly reduced by compression technology, which is convenient for storage and transmission; In the display stage, digital signals are mainly converted into images visible to human eyes and displayed.

3. Digital imaging technology has been widely used in medical imaging, security monitoring, unmanned driving, virtual reality, video conferencing and other fields, and with the continuous progress of sensors, processors, displays and other technologies, the improvement of digital imaging technology in image quality and processing speed will bring broader application prospects.

Expand knowledge:

Common technologies of digital imaging: Common technologies of digital imaging include CCD (Charge Coupled Device), CMOS (Complementary Metal Oxide Semiconductor Sensor), DSP (Digital Signal Processor), JPEG (Joint Photographic Experts Group) and so on.

2. Development course of digital imaging technology: The development of digital imaging technology has gone through three stages: analog imaging, conversion imaging and digital imaging, and digital imaging is the most advanced imaging technology at present.