Blogs » Business » What factors need to be considered when choosing a 1280*720 pix

What factors need to be considered when choosing a 1280*720 pix

  • What factors should be considered when choosing a 1280*720 pixels camera module? The size of a 1280*720 pixels camera module is related to its resolution. The higher the resolution, the larger the size, but it is not proportional. CRT monitors range in size from 17 inches to 21 inches. Liquid crystal (LCD) displays range in size from 18 inches to 32 inches. The higher the brightness, the more grayscales the human eye can distinguish. In order to improve the resolution of gray scales, the brightness of the display must be high. The higher the brightness, the more gray levels the human eye can distinguish.

    Do you know some common sense of 1280*720 pixels camera module?

    Resolution refers to the number of display pixels per unit area, and the cost of the 1280*720 pixels camera module is also proportional to the resolution. Choose a normal monitor resolution of 1024×768. The resolution of the monitor is closely related to the resolution of the image itself. Proper selection of the resolution of the monitor can effectively reduce the acquisition cost of the monitor.

    The human eye's response to grayscale is not linear. Our eyes are less responsive to the dark parts than the bright parts. In order to achieve a good reproduction of black and white images with continuous grayscale, a graphics card with a grayscale output of more than 10bit should be selected.

    Regarding the 1280*720 pixels camera module, it is a question of choosing a horizontal screen or a vertical screen, you can choose according to your own habits. Today's medical LCD manufacturers have designed a function that can be converted between horizontal and vertical, which greatly facilitates clinical use, taking into account the habits and requirements of doctors to read pictures.

    The 1280*720 pixels camera module CRT (Cathode Ray Tube) is a device used to display video information, which is transmitted in different regions according to the TV system (NTSC, PAL). The surface of the CRT is coated with red, green and blue phosphors. Light is emitted when the electron beam emitted by the CRT hits the phosphor, which produces color on the monitor screen. The chromaticity of each basic color phosphor must strictly comply with the standards of the TV system (NTSC, PAL) and be compatible with the input video signal.

    Color temperature, the color of objects we usually see is called "object color". It is the color of light from ambient light sources reflected off the object. Instead, the color of the light emitted by the light source itself is called the "light source color". The image color on the monitor is the light source color. The chromaticity of a light source is expressed in units of Kelvin, the physical property "color temperature". Color temperature is defined by heating a black object such as carbon or tungsten (a black object absorbs all light without emitting or reflecting it). When heating a black object, it will start to glow when the object reaches a certain temperature (denoted by K [kelvins]). This is called color temperature. The higher the color temperature of the 1280*720 pixels camera module, the more blue light the object emits, and the lower the color temperature, the more red light the object emits.

    1280*720 pixels camera module decoder features, in order to accurately reproduce the input RGB signal in the NTSC system, the B-Y and R-Y signals must be decoded with a 90-degree phase. The monitor's decode axis is set to 90 degrees, while the consumer's TV's demodulation axis can be set to 110 degrees to be able to reproduce skin tones. What should I do if the image is blurry when using the 1280*720 pixels camera module?

    When the image of the 1280*720 pixels camera module is blurred, use the aperture control to adjust the sharpness. Increase clarity and view monitor images from a distance of 2 to 3 meters. The image will become clearer at this point. This feature is very useful when evaluating monitors. If the edges of the image are too enhanced, adjust the aperture control to reduce sharpness. When the image is too bright or too dark, if the 75 ohm termination is disabled, the image on the monitor will be too bright and lose image detail. Make sure termination is used.

    According to the different 1280*720 pixels camera module, there are three kinds of termination methods. 1.75 ohm termination interface: BVM series monitors, measuring instruments; 2. Equipment with termination switches: VTR, etc.; 3. Automatic termination: PVM series monitors, LMD series monitors.

    For method 1, connect the termination interface to the video output interface of the device.

    For method 2, set the termination switch to ON.

    For method 3, check if the BNC jack is connected to the video output jack, the other end of the cable is free (case A), or if a BNC-RCA plug adapter is connected to the video output jack and no cable is connected to this adapter (case B ). For case A, disconnect the video output connector, or connect the cable to another device. For case B, disconnect the plug adapter, or connect the cable to the plug adapter and other equipment. If condition A or B is not present, and nothing is connected to the video output, the termination area may be damaged. Please contact to repair the 1280*720 pixels camera module, or connect a termination interface. If the image is too dark, auto-termination may not have been disabled when the cable was plugged into the video output. This phenomenon occurs when the pins on the cable are damaged. Use a new cable to connect.

    1280*720 pixels camera module