Information processing device, information processing method, and program

1. An information processing device, comprising:

processing circuitry configured to:

receive input data of a projection target image;

set a superimposition region in the projection target image;

perform a base representation process according to a first portion of the input data to calculate first display luminance values in a region of the projection target image other than the superimposition region;

perform a highlighting process according to a second portion of the input data to calculate second display luminance values in the superimposition region;

generate, according to the first display luminance values and the second display luminance values, a base image that contains a region image corresponding to the set superimposition region in the projection target image; and

generate, according to the second display luminance values, a superimposition image, the superimposition image and the region image when being projected being superimposed one over the other.

2. The information processing device according to claim 1 , wherein the processing circuitry is configured to, for a pixel in the superimposition region:

generate, based on comparing one of the second display luminance values corresponding to the pixel and a predetermined reference luminance, both

a base-pixel information item of the base image corresponding to the pixel in the superimposition region, and

a superimposition-pixel information item of the superimposition image corresponding to the pixel in the superimposition region.

3. The information processing device according to claim 2 , wherein the processing circuitry is configured to, for the pixel in the superimposition region:

when the one of the second display luminance values is lower than the predetermined reference luminance,

generate the base-pixel information item according to the one of the second display luminance values, and

generate the superimposition-pixel information item according to a zero display luminance value.

4. The information processing device according to claim 2 , wherein the processing circuitry is configured to, for the pixel in the superimposition region:

when the one of the second display luminance values is higher than the predetermined reference luminance,

generate the base-pixel information item according to the predetermined reference luminance, and

generate the superimposition-pixel information item according to a difference between the one of the second display luminance values and the predetermined reference luminance.

5. The information processing device according to claim 1 , wherein the processing circuitry is configured to, for a pixel in the superimposition region:

generate, based on comparing one of the second display luminance values corresponding to the pixel and a first reference luminance or based on comparing the one of the second display luminance values and a second reference luminance that is higher than the first reference luminance,

a base-pixel information item of the base image corresponding to the pixel in the superimposition region,

a first superimposition-pixel information item of the superimposition image corresponding to the pixel in the superimposition region, and

a second superimposition-pixel information item of a second superimposition image corresponding to the pixel in the superimposition region.

6. The information processing device according to claim 5 , wherein the processing circuitry is configured to, for the pixel in the superimposition region:

when the one of the second display luminance values is lower than the first reference luminance,

generate the base-pixel information item according to the one of the second display luminance values, and

generate the first superimposition-pixel information item and the second superimposition-pixel information item according to a zero display luminance values.

7. The information processing device according to claim 5 , wherein the processing circuitry is configured to, for the pixel in the superimposition region:

when the one of the second display luminance values is higher than the first reference luminance and lower than the second reference luminance,

generate the base-pixel information item according to the first reference luminance,

generate the first superimposition-pixel information item according to a difference between the one of the second display luminance values and the first reference luminance, and

generate the second superimposition-pixel information item according to the zero display luminance value.

8. The information processing device according to claim 5 , wherein the processing circuitry is configured to, for the pixel in the superimposition region:

when the one of the second display luminance values is higher than the second reference luminance,

generate the base-pixel information item according to the first reference luminance,

generate the first superimposition-pixel information item according to a difference between the second reference luminance and the first reference luminance, and

generate the second superimposition-pixel information item according to a difference between the one of the second display luminance values and the second reference luminance.

9. The information processing device according to claim 2 , wherein

the predetermined reference luminance is set on a basis of at least one of

a peak luminance of the projection target image,

a displayable luminance of a first image projection device that projects the base image, or

a displayable luminance of a second image projection device that projects the superimposition image.

10. The information processing device according to claim 1 , wherein

the highlighting process is a process of calculating the second display luminance values in a high dynamic range.

11. The information processing device according to claim 1 , wherein

the base representation process is a process of calculating the first display luminance values in a standard dynamic range.

12. The information processing device according to claim 1 , wherein

the processing circuitry is further configured to execute an enlargement process of enlarging the superimposition image in accordance with a resolution of an image projection device that projects the superimposition image.

13. The information processing device according to claim 1 , wherein

the projection target image is a high dynamic range image.

14. The information processing device according to claim 1 , wherein

the projection target image includes a plurality of display regions, and

the processing circuitry is configured to set at least one of the plurality of display regions as the superimposition region.

15. An information processing method that is carried out by a computer system, the information processing method comprising:

receiving input data of a projection target image;

setting a superimposition region in the projection target image;

performing a base representation process according to a first portion of the input data to calculate first display luminance values in a region of the projection target image other than the superimposition region;

performing a highlighting process according to a second portion of the input data to calculate second display luminance values in the superimposition region;

generating, according to the first display luminance values and the second display luminance values, a base image that contains a region image corresponding to the set superimposition region in the projection target image; and

generating, according to the second display luminance values, a superimposition image, the superimposition image and the region image when being projected being superimposed one over the other.

16. A non-transitory storage medium storing a program which, when being executed by a computer, causes the computer to perform:

receiving input data of a projection target image;

setting a superimposition region in the projection target image;

performing a base representation process according to a first portion of the input data to calculate first display luminance values in a region of the projection target image other than the superimposition region;

performing a highlighting process according to a second portion of the input data to calculate second display luminance values in the superimposition region;

generating, according to the first display luminance values and the second display luminance values, a base image that contains a region image corresponding to the set superimposition region in the projection target image; and

generating, according to the second display luminance values, a superimposition image the superimposition image and the region image when being projected being superimposed one over the other.

17. The information processing method according to claim 15 , wherein, for a pixel in the superimposition region,

when one of the second display luminance values corresponding to the pixel is lower than a predetermined reference luminance,

a base-pixel information item of the base image corresponding to the pixel in the superimposition region is generated according to the one of the second display luminance values, and

a superimposition-pixel information item of the superimposition image corresponding to the pixel in the superimposition region is generated according to a zero display luminance value, and

when the one of the second display luminance values is higher than the predetermined reference luminance,

the base-pixel information item is generated according to the predetermined reference luminance, and

the superimposition-pixel information item is generated according to a difference between the one of the second display luminance values and the predetermined reference luminance.