Device and method for estimating the movement of an image sensor between two images, and associated computer program

A method for estimating the movement between two images implemented by an electronic processing device, said images being captured using an image capture device, said method comprising the steps of:

• collecting data defining each of the two images;
• determining an initialization displacement vector characterizing a displacement between said two images;
• implementing, based on the initialization displacement vector, an iterative algorithm delivering at each iteration an updated displacement vector according to an error function to be minimized between one of the two images and the transform of the other image by a displacement defined by the updated displacement vector,
• collecting information defining the movement of the image capture device between the two images;
• collecting the value of one or more capture parameters of the image capture device used for capturing the two images chosen from an angular opening, a zoom factor and the resolution of the images;
• and
• determining the initialization displacement vector by projecting, in the image plane of the image capture device, the displacement between the two images calculated depending on the collected information defining the movement of the image capture device between the two images and depending on the value of each capture parameter.