透视变形 meaning in English

perspective distortion

3d invariant features are the features that will not change with the variety of viewpoints or poses , so it can solve the problems of mis - interpretation in perspective deformation . thus it has significant potentials and interests in object recognition
3d不变特征是指那些在一定范围内不随视点和姿态等的变化而改变的特征，可以有效克服透视变形对成像目标带来的歧义理解，在目标识别中有着突出的发展潜力和应用价值。
Due to complexity of images in realistic world , objects in image blocks mutually . besides , during the creation of photograph , noise are introduced and objects are distorted under perspective transformation . the existing approaches to recognize objects exhibit obvious limitation
由于现实世界的图像十分丰富，图像中物体互相遮挡，而且在图像生成过程中，不仅引入了大量的噪声，同时物体的图像也发生了透视变形，因此目前所提出的许多方法都存在很大的局限性。