Patent ID: 11935275
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 1:
2. The image processing method according to claim 1, further comprising:
generating a histogram of saturation of the first region and a histogram of saturation of the second region as a first saturation histogram and a second saturation histogram, respectively;
calculating a differential saturation histogram by subtracting the second saturation histogram from the first saturation histogram in each bin of corresponding saturation;
obtaining a first pixel count and a second pixel count, the first pixel count being a result of counting a total number of pixels having pixel values included in the specific color range in the first region, the second pixel count being a result of counting a total number of pixels having pixel values included in the specific color range in the second region; and
setting, when the first pixel count is greater than or equal to a third threshold value and the second pixel count is greater than or equal to a fourth threshold value, (i) when a third pixel count is greater than or equal to a fifth threshold value, the first threshold value to decease with an increase in a fourth pixel count, and (ii) when a fifth pixel count is greater than or equal to a sixth threshold value, the second threshold value to decease with an increase in a sixth pixel count, the third pixel count being a total number of pixels classified under the low saturation range in the differential saturation histogram calculated, the fourth pixel count being a total number of pixels classified under the low saturation range in the second saturation histogram, the fifth pixel count being a total number of pixels classified under the high saturation range in the differential saturation histogram, the sixth pixel count being a total number of pixels classified under the high saturation range in the second saturation histogram, wherein
the excluding is performed using the first threshold value and the second threshold value that have been set.