This paper puts forward a kind of improved algorithm wiping off the crass points based on linear fitting algorithm,and proves the algorithm can implement marine antenna extracting in complicated background by analyzing the fetched image practically.

The slope standard error and correlation coefficient of zero-crossing linear fitting;

Analysis for linear fitting results in the experiment of relative pressure coefficient

Using linear fitting technique,a non-contact realtime measurement system based on reticle is established and subpixel detecting method is abandoned in this paper.

The edge detection method with straight line fitting in digital image processing has been introduced in detail in this paper, and it has been applied into the development of high precision one-dimension photoelectric autocollimator.

By contrasting some conventional Gamma correction methods and comparing the merits and demerits of Gamma correction for both analog and digital circuits,a new correction method by combining lookup table and straight line fitting is put forward here.