Intel Corporation

Chunjuan Liu

Tiehan Lu

In general, in one aspect, the frames of a received video are analyzed using traditional film mode detection (continually capturing data and comparing the data to known parameters for various film modes) until a film mode is detected. Once the film mode is detected, the frames of the received video are analyzed using mode based tracking where measurements are continually predicted based on the mode detected and averaged with actual measurements. The use of the averaged measurements limit the effect of noise captured in the actual measurements. The averaged measurements are continually compared to known parameters for the detected mode to determine if the detected mode is still valid. If the detected mode is valid, the mode based tacking is continued. If the detected mode is no longer valid (e.g., averaged measurements not correlated with known parameters), the process returns to the traditional film mode detection.

Mode based film mode detection

In accordance with some embodiments of the present invention, de-interlacing may be accomplished by using an edge gradient to select a best interpolation direction for several adjacent pixels between two lines of interlaced video. The interpolation of the intermediate line is performed using the best direction. Then the pixels in the line above and below are analyzed to determine whether the interpolated pixel value should actually be used in view of the possible presence of artifacts.

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Shanghai, China

Chunjuan Liu