Image Determination Apparatus, Image Determination Method, and Program, and Image Processing Apparatus, Image Processing Method, and Program

An image determination method comprising the steps of:

• detecting signals belonging to a plurality of frequency bands, from an image signal;
• calculating average values, each of which is a characteristic value equivalent to an amplitude, for respective ones of the detected signals belonging to the plurality of frequency bands;
• calculating a relative value of one of the average values to another of the average values, among the average values calculated for respective ones of the plurality of frequency bands;
• and
• determining an image based on the calculated relative value.

A program for causing a computer to execute the steps of:

• detecting signals belonging to a plurality of frequency bands, from an image signal;
• calculating average values, each of which is a characteristic value equivalent to an amplitude, for respective ones of the signals belonging to the plurality of frequency bands detected in the detecting step;
• calculating a relative value of one of the average values to another of the average values, among the average values calculated for respective ones of the plurality of frequency bands;
• and
• determining an image based on the relative value calculated in the relative value calculating step.

An image processing apparatus comprising:

• an image type determination section including:
• a frequency band signal detecting unit for detecting signals belonging to a plurality of frequency bands, from an image signal,
• an average value calculating unit for calculating average values, each of which is a characteristic value equivalent to an amplitude, for respective ones of the signals belonging to the plurality of frequency bands detected by the frequency band signal detecting unit,
• a relative value calculating unit for calculating a relative value of one of the average values to another of the average values, among the average values calculated for respective ones of the plurality of frequency bands, and
• an image determination unit for determining an image based on the relative value calculated by the relative value calculating unit;
• and
• an image processing section for performing image based processing on the result of the image type determination section.

An image processing method comprising the steps of:

• detecting signals belonging to a plurality of frequency bands, from an image signal;
• calculating average values, each of which is a characteristic value to an amplitude, for respective ones of the detected signals belonging to the plurality of frequency bands;
• calculating a relative value of one of the average values to another of the average values, among the average values calculated for respective ones of the plurality of frequency bands;
• determining an image based on the calculated relative value;
• and
• performing an image processing based on the result of the image determination.

A program for causing a computer to execute the steps of:

• detecting signals belonging to a plurality of frequency bands, from an image signal;
• calculating average values, each of which is a characteristic value equivalent to an amplitude, for respective ones of the detected signals belonging to the plurality of frequency bands;
• calculating a relative value of one of the average values to another of the average values, among the average values calculated for respective ones of the plurality of frequency bands;
• determining an image based on the calculated relative value;
• and
• performing an image processing based on the result of the image determination.