Image processing method, image processing apparatus, and storage medium

Abstract

When a dispersion value of a shading value is equal to or more than a threshold value in the neighborhood of a standard point, it is determined that an image pattern has a texture dominant characteristic. When the value is less than the threshold value, a change of the shading value is determined to be moderate (S ). When the dispersion value is equal to or more than the threshold value (S ), a texture characteristic amount is loaded (S ), a characteristic amount suitable for area growth (e.g., texture energy) is calculated (S ), and a distance D concerning the texture characteristic amount is obtained (S ). When the dispersion value is less than the threshold value (S ), a color component characteristic amount is loaded (S ), a characteristic amount suitable for the area growth (e.g., a characteristic vector obtained from a local histogram concerning a color component or a list of representative color components) is extracted (S ), and a distance D concerning the color component is obtained (S ). The area is grown based on the corresponding characteristic amount (S , S ), and a renewal position is determined based on a new borderline of a core area obtained by unifying area growth results from standard points (S ).