Information processing device for calculating a penetration degree and computer readable medium for the same

1. An information processing device comprising:

a processor, wherein

the processor is configured to

acquire a first characteristic value indicating a shape characteristic of a surface of a medium,

calculate, based on the first characteristic value, a penetration degree of a droplet into the medium based on a brightness statistic, as the first characteristic value, obtained from a diffused light amount image showing an amount of a light reflected by and diffused on the surface of the medium among lights incident on the surface of the medium, and

calculate the brightness statistic by counting a number of a pixel indicating a possible pore, among a plurality of pixels within a unit area in the diffused light amount image, each of the plurality of pixels having a brightness value.

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

the pixel indicating a possible pore is a pixel having a brightness value at a position separated by a predetermined distance or longer from a most frequent brightness value in a distribution diagram. showing a relationship between the plurality of pixels and the brightness values.

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

the pixel indicating a possible pore includes a pixel having a brightness value equal to or greater than a predetermined first threshold value and a pixel having a brightness value equal to or smaller than a predetermined second threshold value.

4. The information processing device according to claim 1 , wherein the processor is configured to

acquire a second characteristic value indicating a ph y sical characteristic of the surface of the medium, and

calculate the penetration degree based on at least one of the first characteristic value and the second characteristic value.

5. The information processing device according to claim 2 , wherein the processor is configured to

acquire a second characteristic value indicating a physical characteristic of the surface of the medium, and

calculate the penetration degree based on at least one of the first characteristic value and the second characteristic value.

6. The information processing device according to claim 3 , wherein the processor is configured to

acquire a second characteristic value indicating a physical characteristic of the surface of the medium, and

calculate the penetration degree based on at least one of the first characteristic value and the second characteristic value.

7. The information processing device according to claim 4 , wherein the processor is configured to

acquire, as the second characteristic value, an electrical resistance value on the surface of the medium.

8. The information processing device according to claim 4 , wherein the processor is configured to

acquire, as the second characteristic value, an amount of an absorbed infrared light among an amount of infrared lights received by the surface of the medium.

9. The information processing device according to claim 4 , wherein the processor is configured to

acquire, as the second characteristic value, both an electrical resistance value on the surface of the medium and an amount of an absorbed infrared light among an amount of infrared lights received by the surface of the medium.

10. A non-transitory computer readable medium storing a program causing a computer to execute a process for information processing, the process comprising:

acquiring a first characteristic value indicating a shape characteristic of a surface of a medium,

calculating, based on the first characteristic value, a penetration degree of a droplet into the medium based on a brightness statistic, as the first characteristic value, obtained from a diffused light amount image showing an amount of a light reflected by and diffused on the surface of the medium among lights incident on the surface of the medium and

calculating the brightness statistic by counting a number of a pixel indicating a possible pore, among a plurality of pixels within a unit area in the diffused light amount image, each of the plurality of pixels having a brightness value.