System and method for improving methods of manufacturing stereoscopic image sensors

A system to improve imaging sensor yields for a pair of image sensors configured to capture a stereoscopic image, comprising:

• a correction pattern comprised of two sheets of alternating light and dark squares joined at a ninety degree angle;
• a support for holding a stereoscopic image sensor pair in front of the correction pattern;
• a control module configured to:
• capture one or more images of the correction pattern with a sensor pair;
• determine correction angles of the sensor pair based on the one or more images of the correction pattern;
• represent the correction angles of the sensor pair in a three dimensional space;
• analyze the three dimensional space of correction angles by determining a mean and variance of the correction angles to determine a set of production correction parameters that satisfies one or both of a minimized variance of the correction angles or a zero-valued mean of the correction angles;
• and
• input the production correction parameters to a manufacturing line to improve sensor pair yields.

An apparatus for improving imaging sensor yields for a pair of image sensors configured to capture a stereoscopic image, comprising:

• a support for holding a stereoscopic image sensor pair in front of a correction pattern;
• a control module configured to:
• measure correction angles of the image pair;
• represent the correction angles in a three dimensional space;
• analyze the three dimensional space of correction angles by determining a mean and variance of the correction angles to determine a set of production correction parameters that satisfies one or both of a minimized variance of the correction angles or a zero-valued mean of the correction angles;
• compare the correction angles to a specified maximum correction parameter;
• and
• input the production correction parameters to a manufacturing line to improve sensor pair yields.

An apparatus improving imaging sensor yields for a pair of image sensors configured to capture a stereoscopic image, comprising:

• means for providing a first image and a second image of a stereoscopic image pair;
• means for capturing one or more images of a correction pattern with the sensor pair;
• means for determining correction angles of the sensor pair based on the one or more images of the correction pattern;
• means for representing the correction angles of the sensor pair in a three dimensional space;
• means for analyzing the three dimensional space of correction angles by determining a mean and variance of the correction angles to determine a set of production correction parameters that satisfies one or both of a minimized variance of the correction angles or a zero-valued mean of the correction angles;
• and
• means for imputing the production correction parameters to a manufacturing line to improve sensor pair yields.

A non-transitory, computer readable medium, comprising instructions that when executed by a processor cause the processor to perform a method of improving imaging sensor yields for a pair of image sensors configured to capture a stereoscopic image, the method comprising:

• providing a stereoscopic image sensor pair taken from a manufacturing line;
• capturing one or more images of a correction pattern with the sensor pair;
• determining roll, pitch and yaw correction angles of the sensor pair based on the one or more images of the correction pattern;
• representing the correction angles of the sensor pair in a three dimensional space with each dimension corresponding to one of roll, pitch, and yaw;
• analyzing the three dimensional space of correction angles by determining a mean and variance for the correction angles to determine a set of production correction parameters that satisfies one or both of a minimized variance of the correction angles or a zero-valued mean of the correction angles;
• and
• inputting the production correction parameters to the manufacturing line to improve sensor pair yields.