Method for detecting a scene change and image editing apparatus

Claim 3

The method for detecting a scene change as claimed in claim 1, wherein the plurality of frames are inputted in a time series.

Claim 4

The method for detecting a scene change as claimed in claim 2, wherein the adjacent frame is a frame that precedes or succeeds the current frame.

Claim 5

The method for detecting a scene change as claimed in claim 1, wherein the orthogonal transformation is discrete cosine transformation.

Claim 6

The method for detecting a scene change as claimed in claim 3, wherein the orthogonal transformation is discrete cosine transformation.

Claim 7

The method for detecting a scene change as claimed in claim 5, wherein each of the blocks is a rectangular region in the frame.

Claim 8

The method for detecting a scene change as claimed in claim 5, wherein when the input image is determined to be a scene change, time information or image position information of the input image is stored.

Claim 9

An image editing apparatus for editing an input image composed of a plurality of frames, comprising: orthogonal transformation means applying orthogonal transformation to each of a plurality of blocks into which each of the frames is divided: direct current component extracting means extracting a direct current component value by the orthogonal transformation; first storage means providing a first frame for storing the direct current component values of the blocks of the first frame; second storage means providing a second frame for storing the direct current component values of the blocks of the second frame; switch means selectively inputting the direct current component values from the direct current component extracting means to said first storage means or said second storage means for each of the frames; difference extracting means referring to said first and second storage means to calculate absolute values of difference between the direct current component values of corresponding blocks of the first and second frames; and discriminating means discriminating presence or absence of a scene change in the input image based on the absolute values, said discriminating means counts the number of blocks for which the absolute value exceeds a first threshold value and determines, when the number is higher than a second threshold value, that there is a scene change between the first and the second frames.

Claim 10

An image editing apparatus for editing an input image composed of a plurality of frames, comprising: orthogonal transformation means applying orthogonal transformation to each of a plurality of blocks into which each of the frames is divided: direct current component extracting means extracting a direct current component value by the orthogonal transformation; first storage means providing a first frame for storing the direct current component values of the blocks of the first frame; second storage means providing a second frame for storing the direct current component values of the blocks of the second frame; switch means selectively inputting the direct current component values from the direct current component extracting means to said first storage means or said second storage means for each of the frames; difference extracting means referring to said first and second storage means to calculate absolute values of difference between the direct current component values of corresponding blocks of the first and second frames; and discriminating means discriminating presence or absence of a scene change in the input image based on the absolute values, said discriminating means counts the number of blocks for which the absolute value exceeds a first threshold value and determines, when the number is higher than a second threshold value, that there is a scene change between the first and the second frames.

Claim 11

The image editing apparatus as claimed in claim 8, wherein the plurality of frames are inputted in a time series.

Claim 12

The image editing apparatus as claimed in claim 9, wherein tile orthogonal transformation is discrete cosine transformation.

Claim 13

The image editing apparatus as claimed in claim 10, further comprising external storage means for storing time information or position information of the input image at a point at which it is discriminated that there is a scene change.

Claim 14

The image editing apparatus as claimed in claim 11, further comprising control means for controlling read-out of an image outputting apparatus in response to the time information or the position information.