Video processing apparatus and video display apparatus
View Patent ↗There is provided a video processing apparatus comprising a motion vector detection unit for detecting data on the motions of objects by using at least two frames, an interpolation frame generation unit for generating interpolation frames in the horizontal/vertical and temporal directions in accordance with the motion vectors obtained by the motion vector detection unit, and an image feature detection unit for detecting the features of motions extended over the at least two frames, wherein the procedures, performed by the image feature detection unit, of generating interpolation frames in the horizontal/vertical and temporal directions are switched over in accordance with the features of motions.
1. A video conversion apparatus for receiving an input video signal including a plurality of frames, generating interpolation frames in accordance with the frames of the input video signal, and converting into a video signal including a part of frame of the plurality of frames included in the input video signal and the interpolation frame, comprising:
a motion vector detection unit for detecting a motion vector among the plurality of frames included in the input video signal;
an image feature detection unit for detecting a feature of a video by generating histogram information concerned with the motion vector detected in the motion vector detection unit; and
a series of interpolation frame generation unit for carrying out: a first interpolation frame generation processing for generating an interpolation frame using the motion vector detected by the motion vector detection unit and the plurality of frames included in the input video signal, a second interpolation frame generation processing for rendering one of frame in the plurality of frames included in the input video signal into an interpolation frame intact, and a third interpolation frame generation processing for rendering a linear interpolation frame of two frames among the plurality of frames included in the input video signal as an interpolation frame to generate the interpolation frame, to generate a series of interpolation frame including a part of frame of the plurality of frames included in the input video signal and the interpolation frame generated from the first to third interpolation frame generation processing; wherein
the series of interpolation frame generation unit, in accordance with a judgment result judged by the image feature detection unit, switching among: a first operation for generating a series of frames including the interpolation frame generated in the first interpolation frame generation processing and a part of frame of the plurality of frames included in the input video signal, a second operation for generating a series of frames including the interpolation frame generated in the second interpolation frame generation processing and a part of frame of the plurality of frames included in the input video signal, and a third operation for generating a series of frames including the interpolation frame generated in the first interpolation frame generation processing and a part of frame of the plurality of frames included in the input video signal and the interpolation frame generated in the third interpolation frame generating processing, and
in the series of frames generated by the third operation, the interpolation frame generated in the first interpolation frame generating processing is inserted between the frame included in the input video signal and the interpolation frame generated in the third interpolation frame generating processing.
2. A video conversion apparatus according to claim 1 , wherein the series of interpolation frame generation unit, in accordance with a judgment result of the video characteristic judgment unit in accordance with a number of motion vector having a count number not smaller than a first threshold count number in a whole histogram, and a judgment result in accordance with a number of motion vector having not smaller than a second threshold count number in a boundary portion of motion detection range of the motion vector detection unit, for switching either the first to third operations for generating a series of frames.
3. A video display apparatus for receiving an input video signal including a plurality of frames, generating interpolation frames in accordance with the frames of the input video signal, and converting into a video signal including a part of frame of the plurality of frames included in the input video signal and the interpolation frame to display, comprising:
a motion vector detection unit for detecting a motion vector among a plurality of frames included in the input video signal;
an image feature detection unit for detecting a feature of a video by generating histogram information concerned with the motion vector detected in the motion vector detection unit;
a series of interpolation frame generation unit for carrying out: a first interpolation frame generation processing for generating an interpolation frame using the motion vector detected by the motion vector detection unit and the plurality of frames included in the input video signal, a second interpolation frame generation processing for rendering one of frame in the plurality of frames included in the input video signal into an interpolation frame intact, and a third interpolation frame generation processing for rendering a linear interpolation frame of two frames among the plurality of frames included in the input video signal as an interpolation frame to generate the interpolation frame, to generate a series of interpolation frame including a part of frame of the plurality of frames included in the input video signal and the interpolation frame generated from the first to third interpolation frame generation processing; and
a display unit for displaying a display signal including the series of interpolation frame generate by the series of interpolation frame generation unit; wherein
the series of interpolation frame generation unit, in accordance with a judgment result judged by the image feature detection unit, switching among a first operation for generating a series of frames including the interpolation frame generated in the first interpolation frame generation processing and a part of frame of the plurality of frames included in the input video signal, a second operation for generating a series of frames including the interpolation frame generated in the second interpolation frame generation processing and a part of frame of the plurality of frames included in the input video signal, and a third operation for generating a series of frame including the interpolation frame generated in the first interpolation frame generation processing and a part of frame of the plurality of frames included in the input video signal and the interpolation frame generated in the third interpolation frame generating processing, and
in the series of frames generated by the third operation, the interpolation frame generated in the first interpolation frame generating processing is inserted between the frame included in the input video signal and the interpolation frame generated in the third interpolation frame generating processing.
4. A video display apparatus according to claim 3 , wherein the series of interpolation frame generation unit, in accordance with a judgment result of the video characteristic judgment unit in accordance with a number of motion vector having a count number not smaller than a first threshold count number in a whole histogram, and a judgment result in accordance with a number of motion vector having not smaller than a second threshold count number in a boundary portion of motion detection range of the motion vector detection unit, for switching either the first to third operations for generating a series of frames.
5. A video conversion method for receiving an input video signal including a plurality of frames, generating interpolation frames in accordance with the frames of the input video signal, and converting into a video signal including a part of frame of the plurality of frames included in the input video signal and the interpolation frame, the method comprising steps of:
a step for motion vector detection for detecting a motion vector among the plurality of frames included in the input video signal;
a step for image feature detection for detecting a feature of a video by generating histogram information concerned with the motion vector detected in the step of motion vector detection; and
a step of series of interpolation frame generation for generating a series of interpolation frame carrying out: a first interpolation frame generation processing for generating an interpolation frame using the motion vector detected by the step of motion vector detection and the plurality of frames included in the input video signal, a second interpolation frame generation processing for rendering one of frame in the plurality of frames included in the input video signal into an interpolation frame intact, and a third interpolation frame generation processing for rendering a linear interpolation frame of two frames among the plurality of frames included in the input video signal as an interpolation frame to generate the interpolation frame, to generate the series of interpolation frame including a part of frame of the plurality of frames included in the input video signal and the interpolation frame generated from the first to third interpolation frame generation processing; wherein
in the step of series of interpolation frame generation, in accordance with a judgment result judged by the step of image feature detection, switching among a first operation for generating a series of frames including the interpolation frame generated in the first interpolation frame generation processing and a part of frame of the plurality of frames included in the input video signal, a second operation for generating a series of frames including the interpolation frame generated in the second interpolation frame generation processing and a part of frame of the plurality of frames included in the input video signal, and a third operation for generating a series of frames including the interpolation frame generated in the first interpolation frame generation processing and a part of frame of the plurality of frames included in the input video signal and the interpolation frame generated in the third interpolation frame generating processing, and
in the series of frames generated by the third operation, the interpolation frame generated in the first interpolation frame generating processing is inserted between the frame included in the input video signal and the interpolation frame generated in the third interpolation frame generating processing.
6. A video converting method according to claim 5 , wherein the series of interpolation frame generation unit, in accordance with a judgment result of a number of motion vectors having a count number not smaller than a first threshold count number in a whole histogram and a judgment result in accordance with a number of motion vectors having not smaller than a second threshold count number in a boundary portion of motion detection range of the motion vector detection unit, for switching either the first to third operations for generating a series of frames.