Visualization system for spatial visualization

A visualization system for spatial visualization, the system comprising:

• an image capture device including an image capture surface;
• a backlight for emitting light toward the image capture surface of the image capture device;
• a first liquid crystal shutter having a flat plate shape and disposed closer to the image capture device between the image capture device and the backlight;
• a second liquid crystal shutter having a flat plate shape and disposed closer to the backlight than the first liquid crystal shutter between the image capture device and the backlight;
• and
• an image processing device, wherein:
• the first liquid crystal shutter and the second liquid crystal shutter facing each other with respect to a direction toward the image capture device from the backlight;
• a gap is formed between the first liquid crystal shutter and the second liquid crystal shutter, the gap allowing a gas flow to flow along the first liquid crystal shutter and the second liquid crystal shutter;
• each of the first liquid crystal shutter and the second liquid crystal shutter is configured to be switchable between a transmissive mode of transmitting the light emitted from the backlight and a pattern display mode of displaying a predetermined pattern by the light emitted from the backlight;
• the image capture device acquires:
• a first image captured under a condition in which the first liquid crystal shutter is in the pattern display mode and the second liquid crystal shutter is in the transmissive mode;
• and
• a second image captured under a condition in which the second liquid crystal shutter is in the pattern display mode and the first liquid crystal shutter is in the transmissive mode;
• and
• the image processing device processes the first image and the second image to acquire an image of the gas flow flowing between the first liquid crystal shutter and the second liquid crystal shutter.