Image processing apparatus, imaging apparatus, and machine-readable medium storing a program

An imaging apparatus comprising:

• a light source that emits lights intensity-modulated with a plurality of modulation frequencies or modulation frequency bands;
• an image sensor that images a subject irradiated by the lights;
• and
• an output section that outputs a plurality of images of the subject captured at different times by the image sensor, in association with information indicating the plurality of modulation frequencies or modulation frequency bands, to an image processing apparatus that, for each pixel, performs demodulation with a plurality of demodulation frequencies or demodulation frequency bands based on the plurality of modulation frequencies or modulation frequency bands.

An image processing apparatus comprising:

• a processor configured to perform operations including:
• acquiring a plurality of images obtained by imaging, at different times, a subject irradiated with lights intensity-modulated with a plurality of modulation frequencies or modulation frequency bands;
• and
• demodulating pixel values of the plurality of images with a plurality of demodulation frequencies or demodulation frequency bands based on the plurality of modulation frequencies or modulation frequency bands, for each pixel, thereby generating a plurality of pieces of pixel information indicating subject light amounts from the subject caused by each of the lights intensity-modulated with the plurality of modulation frequencies or modulation frequency bands, for each pixel.

An image processing apparatus comprising:

• a processor configured to perform operations including:
• acquiring a plurality of images obtained by imaging, at different times, a subject irradiated by multiplexing a plurality of lights that are intensity-modulated and have different phases from each other;
• and
• demodulating pixel values of the plurality of images using phase information of each of the plurality of lights, for each pixel, thereby generating a plurality of pieces of pixel information indicating subject light amounts from the subject caused by each of the plurality of lights, for each pixel.

An imaging apparatus comprising:

• a light source that emits lights intensity-modulated with a plurality of modulation frequencies or modulation frequency bands;
• an image sensor that images a subject irradiated by the lights;
• and
• a processor configured to perioral operations including:
• outputting a plurality of images of the subject captured at different times by the image sensor, in association with information indicating the plurality of modulation frequencies or modulation frequency bands, to an image processing apparatus that, for each pixel, performs demodulation with a plurality of demodulation frequencies or demodulation frequency bands based on the plurality of modulation frequencies or modulation frequency bands.