1. A method for detecting image deformation, for an image capturing device having a first image sensor and a 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 a deform detection according to the first image and the second image, so as to obtain a comparison information between the first image and the second image; and determining whether a coordinate parameter relationship between the first image and the second image is varied according to the comparison information, wherein the coordinate parameter relationship is associated with a spatial configuration relationship between the first image sensor and the second image sensor.