A TV IMAGE INPUT DEVICE
Jianmin Zheng · Chinese Journal of Computers · 1983
A TV image input is to convert two-dimensional information, which represents the brightness at each point of a photograph or a natural image acquired by a telecamera, into a numerical form and to store it in a computer. A method of combining hardware with software to get static TV images is proposed and an input device developed.Input A/D conversion is carried out by software control, thus it simplifies the hardware design and reduces the cost. Such a device can acquire a two-valued image at a specified threshold suitable for display, can combine and/or assemble two-valued images, that are arbitrarily abstracted from an image, to obtain an arbitrary gray level image under the maximum gray scale. In some special applications (such as scene analysis or design processing etc.), this device is capable of segmenting images.