Display control apparatus, head mounted display, and display control method
There is provided a display control apparatus capable of displaying a high-quality image while inhibiting a load at the time of displaying the image in front of a user. There is provided a display control apparatus including a signal processing unit that performs signal processing in which a first mode and a second mode are switchable at a first region in a screen and a region other than the first region in the screen, display being performed at a first resolution in the first mode, display being performed at a second resolution in the second mode, in which the signal processing unit performs display while reducing a resolution in the second mode toward an outer periphery of the screen.
1. A display control apparatus, comprising:
a signal processing unit configured to:
determine a first count of pixels with respect to a viewing angle from a center of a screen;
change the first count of pixels to a second count of pixels based on metadata of content to be displayed on the screen, wherein
the metadata of the content includes information of an attention region associated with the content, and
the attention region is a region to be displayed at a first resolution;
determine a first region and a second region on the screen based on the second count of pixels, wherein the second region is different from the first region;
control, in a first mode, display of the content at the first region; and
control, in a second mode, display of the content at the second region, wherein
in the first mode, the display of the content is at the first resolution, and
in the second mode, the display of the content is at a second resolution lower than the first resolution.
2. The display control apparatus according to claim 1 , wherein at a time of the display of the content in the second mode, the signal processing unit is further configured to reduce the first resolution of the display of the content from the center of the screen toward an outer periphery of the screen.
3. The display control apparatus according to claim 1 , wherein
the signal processing unit is further configured to determine the first region and the second region based on a specific quadratic function, and
the specific quadratic function specifies a relation between the viewing angle from the center of the screen and a display magnification.
4. The display control apparatus according to claim 3 , wherein the signal processing unit is further configured to determine the first region and the second region based on a linear approximation of the specific quadratic function.
5. The display control apparatus according to claim 3 , wherein the signal processing unit is further configured to:
determine a size of a display region on the screen with respect to the viewing angle from the center of the screen; and
determine the first region and the second region based on the determined size of the display region.
6. The display control apparatus according to claim 5 , wherein the signal processing unit is further configured to determine the display magnification with respect to each pixel of the screen.
7. The display control apparatus according to claim 1 , wherein the signal processing unit is further configured to determine the first region based on a user's line-of-sight toward the screen.
8. The display control apparatus according to claim 1 , wherein
the signal processing unit is further configured to output a first signal to a driver, and
the driver supplies a second signal to a pixel of the screen based on the first signal.
9. The display control apparatus according to claim 1 , wherein one piece of display information corresponds to one pixel of the screen in the first resolution.
10. A head mounted display, comprising:
a display control apparatus that includes a signal processing unit configured to:
determine a first count of pixels with respect to a viewing angle from a center of a screen;
change the first count of pixels to a second count of pixels based on metadata of content to be displayed on the screen, wherein
the metadata of the content includes information of an attention region associated with the content, and
the attention region is a region to be displayed at a first resolution;
determine a first region and a second region on the screen based on the second count of pixels, wherein the second region is different from the first region;
control, in a first mode, display of the content at the first region; and
control, in a second mode, display of the content at the second region, wherein
in the first mode, the display of the content is at the first resolution, and
in the second mode, the display of the content is at a second resolution lower than the first resolution.
11. A display control method, comprising:
determining, by a processor, a first count of pixels with respect to a viewing angle from a center of a screen;
changing, by the processor, the first count of pixels to a second count of pixels based on metadata of content to be displayed on the screen, wherein
the metadata of the content includes information of an attention region associated with the content, and
the attention region is a region to be displayed at a first resolution;
determining, by the processor, a first region and a second region on the screen based on the second count of pixels, wherein the second region is different from the first region;
controlling, in a first mode, display of the content at the first region; and
controlling, in a second mode, display of the content at the second region, wherein in the first mode, the display of the content is at the first resolution, and in the second mode, the display of the content is at a second resolution lower than the first resolution.
12. A non-transitory computer-readable medium having stored thereon computer-executable instructions that, when executed by a processor, cause the processor to execute operations, the operations comprising:
determining a first count of pixels with respect to a viewing angle from a center of a screen;
changing the first count of pixels to a second count of pixels based on metadata of content to be displayed on the screen, wherein
the metadata of the content includes information of an attention region associated with the content, and
the attention region is a region to be displayed at a first resolution;
determining a first region and a second region on the screen based on the second count of pixels, wherein the second region is different from the first region;
controlling, in a first mode, display of the content at the first region; and
controlling, in a second mode, display of the content at the second region, wherein in the first mode, the display of the content is at the first resolution, and in the second mode, the display of the content is at a second resolution lower than the first resolution.