Automatic indexing of video documents



Fade/Dissolve detection

The detection of fades or dissolves is based once again on the establishment of a similarity criterion between two successive frames (a distance in a specific color space for example). The temporal evolution of the criterion leads to a 1D-signal which presents small hills at the dissolve positions. These hills are still extracted by morphological filtering, but this time it is applied hierarchically on the curves. One obtains therefore the following information : the beginning frame of the dissolve, its last frame and its duration.

To see an example of a dissolve detected by this technique,click here.

Criterion evolution curve


Sequence nantes (5hz) - CopyrightCMM/ENSMP.


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Results

We present successively the key frames from the cut detection and the key frames from the dissolve detection. Let us underline the dissolve extration (shot #5) between frames #26 and #29 of the sequence.

Extracted key frames by cut detection for the sequence Nantes (5hz) - CopyrightCMM/ENSMP.


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Extracted key frames by dissolve detection for the sequence Nantes (5hz) - CopyrightCMM/ENSMP.


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All the original images in this page come from TV newscasts of the french TV channels TF1, FR3, A2 or M6 and are therefore copyrighted by these channels. All other images or photos are copyrighted by the CMM. These documents are protected by the law on the author rights, each non-authorized copy or use is therefore strickly forbidden.
Last update : 31 - 05 - 99
demarty@cmm.ensmp.fr