Image processing apparatus and image processing method

An image processing apparatus comprising at least one processor, when executing a program, function as:

• an information obtaining unit configured to obtain three-dimensional motion contrast information of a subject obtained using a tomographic signal of a combined light, the lights being obtained by splitting a combined light obtained by combining a returned light from the subject illuminated with a measurement light with a reference light corresponding to the measurement light;
• a region obtaining unit configured to obtain a blood vessel region using the three-dimensional motion contrast information;
• an image generation unit configured to generate a motion contrast image using the three-dimensional motion contrast information;
• and
• a display control unit configured to cause a display unit to display the generated image and a graph showing a change over time in a value of a parameter indicating the blood vessel region.

An image processing method comprising:

• obtaining three-dimensional polarization sensitive tomographic information and three-dimensional motion contrast information of a subject based on tomographic signals of lights having different polarizations, the lights being obtained by splitting a combined light obtained by combining a returned light from the subject illuminated with a measurement light with a reference light corresponding to the measurement light;
• obtaining a blood vessel region of the subject using the three-dimensional motion contrast information and to obtain a lesion region of the subject using the three-dimensional polarization sensitive tomographic information;
• generating at least one image in which the lesion region is superimposed on a motion contrast image generated using the three-dimensional motion contrast information or an image in which the blood vessel region is superimposed on a polarization image generated using the three-dimensional polarization sensitive tomographic information, and
• causing a display unit to display the generated at least one image, a value of a parameter indicating the lesion region, and a value of a parameter indicating the blood vessel region.

An image processing method comprising:

• obtaining three-dimensional motion contrast information of a subject obtained using a tomographic signal of a combined light obtained by combining a returned light from the subject illuminated with a measurement light with a reference light corresponding to the measurement light;
• obtaining a blood vessel region using the three-dimensional motion contrast information;
• and
• generating a motion contrast image using the three-dimensional motion contrast information, and
• causing a display unit to display the generated image and a graph showing a change over time in a value of a parameter indicating the blood vessel region.