Patent ID: 8498450

Claim:
An image discriminating method comprising the steps of: processing an inputted image to detect faces of one or more persons in the inputted image; detecting at least one face of a person in the inputted image; determining that the inputted image is a landscape photo image when no face is detected in the inputted image; calculating an area of each detected face in the inputted image; counting the number of faces detected in the inputted image; determining that the inputted image is a snapshot photo image when (a) a ratio of the total area of all of the faces to the total area of the inputted image is no more than a first predetermined value, or (b) the ratio of the total area all of the faces to the total area of the inputted image images is more than the first predetermined value and the number of faces is no less than a second predetermined number; determining that the inputted image is a portrait image when the ratio of the total area of all of the faces to the total area of the inputted image is more than the first predetermined value and the number of faces is less than the second predetermined number; and correcting gradation and chroma of the inputted image based on whether the inputted image is determined to be a landscape photo image, a snapshot photo image, or a portrait image.