求翻译：同時它的缺點是圖像信息很少且數目較多 匹配時要找較多的匹配準則來對這些點特徵進行約束 以保證匹配的準確性和計算效率是什么意思？

While its disadvantage is small and a larger number of image information when looking for more match criteria to match the characteristics of these points match the constraints to ensure the accuracy and computational efficiency

At the same time it is the shortcomings is an image little information and there are more match to find more matching standards are to be bound by the characteristics point of the match HSBC standards is calculated and efficiency

Simultaneously its shortcoming is the pictorial information are very few also when number many matches must look for the many match criterion to come to these characteristics to carry on the restraint to guarantee the match the accuracy and the counting yield

Disadvantage while it is image information is seldom and more matches to find more number of match criteria to constrain the point feature to ensure matching accuracy and computational efficiency

同时它的缺点是图像信息很少且数目较多 匹配时要找较多的匹配准则来对这些点特征进行约束 以保证匹配的准确性和计算效率