How is the usb endoscope camera calibrated? Common monitors include: memory, speed, 3D indicators, commonly used AGP slots; usb endoscope cameras include: commonly used PCI slots, display mode, one card and two displays, main and secondary display interchange, color - Black and white conversion, 10bit, 12bit grayscale output, horizontal/vertical screen conversion. Display Mode: When the diagnostic workstation needs two or more monitors, the graphics card should have flexible display modes to facilitate the diagnosis of doctors. Display modes are: independent display, extended display, duplicate display.
What is the difference between usb endoscope camera and ordinary display devices?
The usb endoscope camera is a high-definition, high-brightness display device in the display field. With the increasing maturity and popularization of PACS technology and the rapid development of various digital imaging equipment, the usb endoscope camera is a terminal image presenter for doctors to realize "soft reading" observation and diagnosis of patients, and is used to display black and white, color images or What are the differences between ordinary display devices for text? Let's find out together.
usb endoscope camera size: usb endoscope camera is calculated by the diagonal length, generally in inches. Medical: basically similar to X film, common sizes are: 18", 20", 21"; common: common sizes are: 14", 15", 17", 19". Resolution: the actual number of pixels displayed per unit area .1MP=1 megapixel.Medical: 1MP (10241280), 2MP (12001600), 3MP (15362048), 5MP (20482560), 10MP (40962560); Normal: 800600 , 1024768, 12801204.
Brightness: Brightness is how bright the image is displayed on the monitor, in units (cd/m2) candela per square meter. Medical: 600-700 cd/m2 The brightness set by the standard calibration is between 400-500 cd/m2; it requires 30,000 hours, or even 100,000 hours, the brightness value remains unchanged. Normal: 200-300 cd/m2 No other requirements.
Usb endoscope camera contrast: describe the difference between black and white displayed by the display, express the ratio of the display to the bright value and the dark value, the contrast ratio is also called the dynamic range. Medical: 600:1---1000:1; General: 300:1---400:1.
usb endoscope camera with one card and two displays: when a workstation is equipped with two monitors, the graphics card has two output ports; the main and secondary displays are interchanged: when the workstation has one ordinary monitor and one or more usb endoscope cameras; When setting the normal display as the main display and the medical as the secondary display, when the normal display and the usb endoscope camera display color and grayscale images respectively, there should be no color missing in color and no fault in grayscale.
The regular performance check of the usb endoscope camera is very necessary. This performance check is called calibration. The usb endoscope camera is expensive compared to ordinary monitors, but also because of its high calibration requirements.
There are two main calibration methods for usb endoscope camera: external type and built-in type, and the built-in type is divided into front type and rear type. Monitor calibration, strictly speaking, should be to calibrate the "display effect" of the monitor through the "display link". Its purpose is to maintain the standardization and consistency of digital image display.
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