Analysis of 3d video

An image analysis method for processing a 3D video signal comprising successive pairs of images representing different respective views of a scene to generate an image depth indicator;

• the method comprising:
• correlating image areas in one of the pair of images with image areas in the other of the pair of images so as to detect displacements of corresponding image areas between the two images;
• generating a graphical representation of the distribution of the displacements, with respect to a range of possible displacement values, across the pair of images;
• and
• generating for display the graphical representation in respect of a current pair of images and in respect of a plurality of preceding pairs of images, so as to provide a time-based representation of variations in the distribution of the displacements.

A computer program product comprising a non-transitory machine-readable storage medium on which computer software is stored, which software, when executed by a computer, causes the computer to carry out an image analysis method for processing a 3D video signal comprising successive pairs of images representing different respective views of a scene to generate an image depth indicator;

• the method comprising:
• correlating image areas in one of the pair of images with image areas in the other of the pair of images so as to detect displacements of corresponding image areas between the two images;
• generating a graphical representation of the distribution of the displacements, with respect to a range of possible displacement values, across the pair of images;
• and
• generating for display the graphical representation in respect of a current pair of images and in respect of a plurality of preceding pairs of images, so as to provide a time-based representation of variations in the distribution of the displacements.