By introducing theories of matrix, this paper presents a calculation method for the rank of the quadratic form in quadraticsum resolution.
引用矩阵的有关理论，给出了平方和分解式中二次型秩数的计算方法。
2
A new formula is obtained to find out regression coefficients, based on the fact that the quadraticsum of distance between line and spots in minimum.
由点线距的平方和最小，得出一种求回归系数的新公式。
3
At first, noise is reduced by median filtering. Secondly, the DQS (Difference QuadraticSum) algorithm is presented to restrain the background noise and enhance the targets.