Spatial filtering apparatus and method of spatial filtering using the same

A method of spatial filtering, the method comprising:

• generating first light and second light by selectively rotating polarized light;
• performing a first spatial filtering process and a second spatial filtering process to the first light and the second light, respectively;
• generating first image data and second image data based on the first light and the second light;
• and
• generating filtering image data based on the first image data and the second image data.

A spatial filtering apparatus comprising:

• a polarizer;
• a composite filter;
• a light receiver;
• and
• an image controller,
• wherein the polarizer is configured to selectively provide first light in a first polarization direction and second light in a second polarization direction to the composite filter,
• wherein the composite filter is configured to spatially filter the first light and the second light, and provide the first light and the second light to the light receiver,
• wherein the light receiver is configured to provide first image data obtained based on the first light and second image data obtained based on the second light to the image controller, and
• wherein the image controller is configured to generate filtering image data based on the first image data and the second image data.