Image processor and image processing method for increasing video resolution
View Patent ↗According to one embodiment, an image processor comprises an image converter and a controller. The image converter is configured to convert a first video signal of a first resolution to a second video signal of a second resolution higher than the first resolution. The conversion is based on a parameter indicating a ratio of high-frequency component pixels of the first video signal to be interpolated and pixels forming the first video signal to be interpolated. The controller is configured to change the parameter based on a type of broadcast wave of the first video signal. The type of broadcast wave may include, but is not limited or restricted to satellite broadcasting or terrestrial broadcasting.
1. An image processor comprising:
an image converter configured to convert a first video signal of a first resolution to a second video signal of a second resolution higher than the first resolution using a parameter having a numeric value indicating a ratio of high-frequency component pixels of the first video signal to be interpolated and pixels forming the first video signal to be interpolated; and
a controller configured to change the parameter based on a type of broadcast wave of the first video signal, the type of broadcast wave including at least one of (i) satellite broadcasting and (ii) terrestrial broadcasting.
2. The image processor of claim 1 , wherein the satellite broadcasting includes either (i) a broadcasting satellite (BS) broadcasting or (ii) a communication satellite (CS) broadcasting.
3. The image processor of claim 1 , wherein the terrestrial broadcasting includes either (i) digital terrestrial broadcasting or (ii) analog terrestrial broadcasting.
4. The image processor of claim 1 , further comprising:
an information amount receiver configured to receive an instruction for selecting a channel from a user, wherein the controller changes the parameter based on the type of broadcast wave of the selected channel.
5. The image processor of claim 1 , further comprising:
a setting module configured to allow the user to set the parameter to any numeric value.
6. The image processor of claim 1 , further comprising:
a detector configured to detect at least one of a bit rate amount of the first video signal, a noise amount of the first video signal, and a type of terminal to which the first video signal is input to detect a type of the broadcasting based on a detection result of the detector, wherein the controller changes the parameter based on the detected type of the broadcasting.
7. The image processor of claim 1 , wherein the image converter is further configured to perform super-resolution processing by increasing the first resolution of the first video signal to the second resolution of the second video signal.
8. The image processor of claim 1 , wherein the controller is further configured to change the parameter such that the smaller a transmission amount of a video signal of the type of broadcasting, the smaller the ratio.
9. The image processor of claim 1 , further comprising:
a display configured to display the second image signal.
10. The image processor of claim 1 , wherein the pixels forming the first video signal to be interpolated are all of the pixels of the first video signal to be interpolated.
11. An image processing method comprising:
converting a first video signal of a first resolution to a second video signal of a second resolution higher than the first resolution using a parameter having a numeric value indicating a ratio of high-frequency component pixels of the first video signal and pixels forming the first video signal; and
changing the parameter based on a type of broadcast wave of the first video signal, the type of broadcast wave including at least one of (i) satellite broadcasting and (ii) terrestrial broadcasting.
12. The image processing method of claim 11 further comprising: receiving the type of broadcast wave from a user, wherein the changing includes changing the parameter based on the received type of broadcast wave.
13. The image processing method of claim 11 , wherein the satellite broadcasting includes either (i) a broadcasting satellite (BS) broadcasting or (ii) a communication satellite (CS) broadcasting.
14. The image processing method of claim 11 , wherein the terrestrial broadcasting includes either (i) digital terrestrial broadcasting or (ii) analog terrestrial broadcasting.
15. An image processor comprising:
a resolution increase module configured to perform super-resolution processing by increasing a first resolution of a first video signal to a second resolution of a second video signal using a super-resolution level that indicates an intensity of a super-resolution conversion as a numeric value; and
a controller configured to change the super-resolution level based on a type of broadcasting of the first video signal, the type of broadcasting including at least one of (i) satellite broadcasting and (ii) terrestrial broadcasting.
16. The image processor of claim 15 , wherein the satellite broadcasting includes either (i) a broadcasting satellite (BS) broadcasting or (ii) a communication satellite (CS) broadcasting.
17. The image processor of claim 15 , wherein the terrestrial broadcasting includes either (i) digital terrestrial broadcasting or (ii) analog terrestrial broadcasting.
18. The image processor of claim 15 , wherein
the super-resolution level indicates, in the super-resolution conversion, a ratio of high-frequency component pixels with respect to pixels to be interpolated.
19. The image processor of claim 18 , wherein the pixels forming the first video signal to be interpolated are all of the pixels of the first video signal.
20. The image processor of claim 15 , further comprising:
an information amount receiver configured to receive the type of broadcast wave from a user, wherein the controller is configured to change the super-resolution level to the super-resolution level corresponding to the received type of broadcast wave.
21. An image processor comprising:
a resolution increase module configured to perform super-resolution processing by increasing a first resolution of a first video signal to a second resolution of a second video signal using a parameter having a numeric value indicating a ratio of high-frequency component pixels of the first video signal to be interpolated and pixels forming the first video signal to be interpolated; and
a controller configured to change a super-resolution level indicating an intensity of the super-resolution processing performed by the resolution increase module based on a type of broadcast wave of the first video signal, the type of broadcast wave including at least one of (i) satellite broadcasting and (ii) terrestrial broadcasting.
22. The image processor of claim 21 , wherein the satellite broadcasting includes either (i) a broadcasting satellite (BS) broadcasting or (ii) a communication satellite (CS) broadcasting.
23. The image processor of claim 21 , wherein the terrestrial broadcasting includes either (i) digital terrestrial broadcasting or (ii) analog terrestrial broadcasting.