1. A method for detecting image deformation, for an image capturing device having a storage unit, a first image sensor and a second image sensor, wherein the first image sensor and the second image sensor are disposed on the image capturing device with a spatial configuration relationship, wherein a current calibration parameter is stored in the storage unit and set corresponding to the spatial configuration relationship between the first image sensor and the second image sensor, the method comprising: capturing a first image through the first image sensor, and capturing a second image through the second image sensor; performing an image rectification on the first image and the second image through the current calibration parameter; performing a deform detection according to the rectified first image and the rectified second image, so as to obtain a relative spatial information between the rectified first image and the rectified second image; determining whether the current calibration parameter storing in the storage unit is complied with the spatial configuration relation by determining a coordinate parameter relationship between the first rectified image and the rectified second image is varied when the relative spatial information is not complied with a predefined condition, wherein the coordinate parameter relationship is associated with the spatial configuration relationship between the first image sensor and the second image sensor; and when the coordinate parameter relationship between the rectified first image and the rectified second image is varied, performing a dynamic warping procedure on the first rectified image and the rectified second image, so as to calibrate the coordinate parameter relationship between the rectified first image and the rectified second image.