Blemish detection from Imatest filters images by response function

Aug. 16, 2010
Version 3.6 of Master Edition includes Blemish Detect, which finds visible sensor defects, typically blurred spots caused by dust in front of the image sensor.

Version 3.6 of Master Edition includes Blemish Detect, which finds visible sensor defects, typically blurred spots caused by dust in front of the image sensor. To ensure that visible blemishes are flagged and those below the threshold of visibility are not, the image is filtered by a response function derived from the human visual system.
Imatest
Boulder, CO

www.imatest.com

-----

Blemish Detect detects visible sensor defects (typically blurred spots caused by dust in front of the image sensor). To ensure that visible blemishes are flagged— and blemishes below the threshold of visibility are not— the image is filtered by a response function derived from the Human Visual System (HVS). Filter settings are adjustable for a wide range of applications and viewing conditions. The IT version of Blemish Detect, which can be incorporated into automated testing systems, can significantly improve sensor yields.

For best results, Blemish parameters must be chosen with care.
Be sure to read the instructions!

The Blemish module was introduced in Imatest 3.6, January 2010 (Master-only)

Blemish Detect uses the same uniform featureless image as Light Falloff, but its emphasis is different— on defects or blemishes, i.e., localized density variations, rather than illumination falloff (vignetting).

Sponsored Recommendations

How Precision Motion Systems are Shaping the Future of Semiconductor Manufacturing

March 28, 2024
This article highlights the pivotal role precision motion systems play in supporting the latest semiconductor manufacturing trends.

Understanding 3D Printing Tolerances: A Guide to Achieving Precision in Additive Manufacturing

March 28, 2024
In the world of additive manufacturing, precision is paramount. One crucial aspect of ensuring precision in 3D printing is understanding tolerances. In this article, we’ll explore...

Automation Technologies to Scale PIC Testing from Lab to Fab

March 28, 2024
This webinar will cover the basics of precision motion systems for PIC testing and discuss the ways motion solutions can be specifically designed to address the production-scale...

Case Study: Medical Tube Laser Processing

March 28, 2024
To enhance their cardiovascular stent’s precision, optimize throughput and elevate part quality, a renowned manufacturer of medical products embarked on a mission to fabricate...

Voice your opinion!

To join the conversation, and become an exclusive member of Laser Focus World, create an account today!