關於SMIA的測試方法

dennislaw

各位好，有沒有熟悉SMIA標准的DX，請指教一下下面的測試怎麼進行, 謝謝。
SMIA 1.0 Part 5 中的5.15 Module Response Non-Linearity.
　　　　　　　　　　5.16　Photo Response Non-uniformity

Lasert

smia的测试nokia给出了很详尽的测试方法。参见SMIA Conformance Test Standard

dennislaw

Lasert 兄，哪裡可以找到SMIA Conformance Test Standard 啊，能否把你的分享一下，不甚感激。
　　　　我的email: dennis999law@yahoo.com.cn

hotzgs

Lasert ，SMIA Conformance Test Standard 可以给我一份么?谢谢!
hotzgs@126.com

dy7708

Conformance test standard only descirbe functional test;

You can refer Characterization test.

dennislaw

5.15.1 Description

The camera response linearity is a measure of the linearity of the module output with respect to integration time.  

By using a series of integration times at a standard illumination and quantifying the differences between the resultant images one can evaluate the linearity of the camera response to different signal levels. At each integration time two frames are taken: one of a target of known luminance and the other in the dark. The average pixel value for the dark frames is subtracted from the average pixel value for the light frames to give the response level.  

The linearity is taken to be the deviation of the response versus integration time from a straight line. To measure the linearity we must first generate a best-fit straight line using linear regression analysis (y = m.x + c). To be faithful to the linear part of the camera response this is done over the part of the curve with response levels 10% to 60% of FSD. It is anticipated that the inclusion of results from the upper part of the curve could skew the fitted line such as to impose an inherent slope on the integral non-linearity.

The linearity is now measured with respect to the straight line fit using both an integral and differential non-linearity metrics.

看了半天似懂非懂，還是不知道怎麼去測試，望有經驗的高人指點。

songhui

请问你们又在作支持ccp的camera module吗？是哪个公司的module呢？