Image sensor evaluation method using computing device including processor

An image sensor evaluation method using a computing device comprising a processor, the method comprising:

• receiving, by the processor, image data obtained by capturing a plurality of neighboring lines through an image sensor;
• performing, by the processor, Fourier transform on a shape of the plurality of neighboring lines on the image data to generate frequency domain data;
• performing, by the processor, band pass filtering on the frequency domain data;
• performing, by the processor, inverse Fourier transform on result data of the band pass filtering;
• obtaining, by the processor, a degree of similarity between result data of the inverse Fourier transform and the plurality of neighboring lines;
• and
• normalizing, by the processor, the degree of similarity to generate a quality score of the image sensor.

A computing device comprising:

• a memory configured to receive image data obtained by capturing a plurality of neighboring lines from an image sensor;
• and
• a processor configured to:
• receive the image data from the memory;
• generate a first quality score of the image sensor by performing a spatial domain analysis on the received image data;
• generate a second quality score of the image sensor by performing a frequency domain analysis on the received image data;
• and
• generate a final quality score of the image sensor based on the first quality score and the second quality score,
• wherein the plurality of neighboring lines on the image data comprise lines extending in a second direction and disposed in a first direction perpendicular to the second direction, and
• wherein the final quality score corresponds to a quality when the image sensor captures a text.