Establishing affine invariant similarity measure of shapes is one of the basic problems in pattern recognition, computer vision and image understanding domains.
建立仿射不变的形状相似性度量是模式识别、计算机视觉和图象理解领域中的基本问题之一。
2
The beam quality of the frequency-doubled beam is invariant when the radius of the basic beam with the same beam quality is variant in the crystal surface.
而对于相同光束质量的基频基模光束，倍频光光束质量随着入射在倍频晶体上不同的基频光光斑半径基本不变。
3
The basic properties of a transfer operator of a linear time-invariant continuous system are proved comprehensively and systematically.