| 摘要 |
Provided are an image signal acquisition method and an image signal acquisition device. The method comprises the following steps: measuring a brightness signal of a greyscale switching picture of a sampling greyscale; and conducting a two-dimensional nonlinear fitting operation on the measured brightness signal of the greyscale switching picture of the sampling greyscale, wherein the two-dimensional nonlinear fitting operation is a fitting operation conducted using a two-dimensional least square method. Also provided is an image signal acquisition device. By means of the present invention, a two-dimensional nonlinear fitting operation is conducted on a brightness signal of a greyscale switching picture of a sampling greyscale, and in this way, the brightness signals of different greyscale switching pictures can be efficiently acquired. |
