Method for determining the movements of an object from a stream of images

A tangible non-transitory computer readable medium comprising software instructions embodied therein for causing a computer system to perform a method for determining the movements of an object from a stream of images of said object, comprising for each image of the stream of images, the method comprising:

• recording said image in an input buffer memory;
• processing said image by a processing unit, the processing comprising the determination of a change in position and/or deformation of said object relative to an image directly preceding said image in the stream;
• and
• synchronizing the recording and processing steps in such a way that the processing of an image is carried out simultaneously with the recording of an image following said image in the stream of images,
• wherein the synchronizing step comprises:
• transmitting to a control unit information relating to the recording of an image in the input buffer memory and to an end of processing of an image;
• and
• transmitting by said control unit instructions relating to a start of processing of an image, a processing start instruction being transmitted to start the processing of an image following the reception of the information relating to the recording of said image and the reception of the information relating to an end of processing of the image directly preceding said image in the stream of images.

A system for determining the movements of an object from a stream of images of said object, comprising a computer with a memory and a central processing unit, said central processing unit comprising:

• a reading unit for recording each image of the stream of images in an input buffer memory;
• a processing unit enabling, for each image, the determination of a change in the position and/or the expression of the face relative to the image directly preceding said image in the stream;
• and
• a control unit for synchronizing the reading unit and processing units in such a way that the processing of each of said images of the stream of images is carried out simultaneously with the reading of an image following said image in the stream of images and its recording in the input buffer memory;
• the control unit receiving information relating to the recording of an image in the input buffer memory and to the end of processing of an image;
• and
• the control unit transmitting instructions relating to a start of processing of an image, a processing start instruction being transmitted by the control unit to start the processing of an image following the reception of the information relating to the recording of said image and the reception of the information relating to an end of processing of the image directly preceding said image in the stream of images.