Image display system and image display method

An image display system comprising:

• a color chart including a plurality of patches that include at least three patches selected from a group consisting of the following first to seventh patches;
• an imaging device configured to simultaneously image the color chart and a person to be imaged and acquire image data;
• and
• a display device configured to receive the image data and display the image data as an image on a display unit thereof,
• wherein
• the first patch includes a region that has a first color represented by L*a*b* values in which L*=72, a*=8, and b*=22 or has a color having a color difference ΔE*of 5 or less in a L*a*b* color space with respect to the first color,
• the second patch includes a region that has a second color represented by the L*a*b* values in which L*=78, a*=30, and b*=15 or has a color having a color difference ΔE* of 5 or less in the L*a*b* color space with respect to the second color,
• the third patch includes a region that has a third color represented by the L*a*b* values in which L*=58, a*=27, and b*=7 or has a color having a color difference ΔE* of 5 or less in the L*a*b* color space with respect to the third color,
• the fourth patch includes a region that has a fourth color represented by the L*a*b values in which L*=60, a*=20, and b*=5 or has a color having a color difference ΔE* of 5 or less in the L*a*b* color space with respect to the fourth color,
• the fifth patch includes a region that has a fifth color represented by the L*a*b* values in which L*=48, a*=25, and b*=2 or has a color having a color difference ΔE* of 5 or less in the L*a*b* color space with respect to the fifth color,
• the sixth patch includes a region that has a sixth color represented by the L*a*b* values in which L*=52, a*=50, and b*=13 or has a color having a color difference ΔE* of 5 or less in the L*a*b* color space with respect to the sixth color, and
• the seventh patch includes a region that has a seventh color represented by the L*a*b* values in which L*=33, a*=40, and b*=30 or has a color having a color difference ΔE* of 5 or less in the L*a*b* color space with respect to the seventh color.