Terms for frame frequency image definition of camera module Definition

2.1.15 pixel / picture element

The smallest imaging unit that makes up all possible brightness and chroma of an image.


2.1.16 pixel pitch


The distance between the centers of adjacent pixels.


Relative deviation of pixel pitch


The ratio of the absolute value to the nominal value of the difference between the measured value and the nominal value of the pixel center distance.


2.1.18 level up degree


The concave and convex deviation of normal direction of video display screen.


Ratio of out of control pixel


The ratio of LED pixels whose luminous state does not match the display state required by the control to the total pixels.


Gray scale


The number of luminance levels that can be distinguished from the darkest to the brightest in the same brightness level of the display screen.


2.1.21 frame refresh frequency


Frequency of video display screen update.


2.1.22 refresh frequency


The video display shows the number of times the data is repeated per second.


2.1.23 picture resolution


The ability to represent image details. For image signal, it is often called source resolution, which is determined by the image format and usually expressed by the number of pixels in horizontal and vertical directions. For imaging devices, CRT is usually represented by the center pitch, and the intrinsic resolution imaging devices such as LED, CCD, LCD, PDP, DLP, LCOS, OLED are usually expressed by the number of pixels in horizontal and vertical directions.


2.1.24 picture definition


The clarity of the details of an image that the human eye can detect, as shown by a television cable.


2.1.25 brightness of display screen


The luminous intensity per unit projected area of any surface observed in the normal direction of the display screen.