Video file playback system capable of previewing image, method thereof, and computer program product
AssigneeVivotek Inc.
InventorsChien-Wen Liu, Yen-Fu Lin, Shih-Wu Fanchiang
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Abstract
A video file playback system capable of previewing an image, a method thereof, and a computer program product can sequentially compare change amounts between chronological two of frame images, select the frame images, of which the change amounts exceed a preset value, in at least one time interval, and select a frame image, which has a maximum change amount, in the frame images in each time interval as a preview image. By displaying a preview image corresponding to each time interval, a user can quickly browse key images of each time interval.
Claims15
A video file playback system capable of previewing an image, comprising:
- a storage unit, which stores a video file, wherein the video file comprises a plurality of frame images arranged according to a sequence of generation time;
- a processing unit, which is electrically connected to the storage unit, and is configured to sequentially compare change amounts between chronological two of the frame images, select the frame images, of which the change amounts exceed a preset value, in at least one time interval, and select a frame image, which has a maximum change amount, in the frame images in each at least one time interval as a preview image;
- a display unit, which is electrically connected to the processing unit, and is configured to display the preview image corresponding to each time interval, and
- an input unit, which is electrically connected to the processing unit, wherein the input unit is configured to select a comparison area on the plurality of frame images, and is further configured to sequentially compare the change amounts between the comparison areas of the chronological two of the frame images, select the frame images, of which the change amounts exceed the preset value, in the at least one time interval, and select the frame image, which has the maximum change amount, in the comparison areas of the frame images in each at least one time interval as the preview image.
A video file playback method of previewing an image, comprising:
- reading a video file, wherein the video file comprises a plurality of frame images arranged according to a sequence of generation time;
- selecting a comparison area on the plurality of frame images;
- sequentially comparing change amounts between the comparison areas of chronological two of the frame images;
- selecting the frame images, of which the change amounts exceed a preset value, in at least one time interval;
- selecting a frame image, which has a maximum change amount, in the comparison areas of the frame images in each at least one time interval as a preview image;
- and
- displaying the preview image corresponding to each time interval.
A computer program product, which is stored on a non-transitory storage medium, when the computer program is loaded into a computer and is executed, a video file playback method capable of previewing an image can be completed, the video file playback method comprising:
- reading a video file, wherein the video file comprises a plurality of frame images arranged according to a sequence of generation time;
- selecting a comparison area on the plurality of frame images;
- sequentially comparing change amounts between the comparison areas of chronological two of the frame images;
- selecting the frame images, of which the change amounts exceed a preset value, in at least one time interval;
- selecting a frame image, which has a maximum change amount, in the comparison areas of the frame images in each at least one time interval as a preview image;
- and
- displaying the preview image corresponding to each time interval.
Dependencies are inferred from the claim text.