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CCD versus CMOS for Industrial Cameras Update

Change over from CCD to CMOS is now

CMOS PERFORMANCE

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CCD versus CMOS 2015

• CMOS has evolved much faster than CCD - Big investments in cell phone cameras/consumer market.

• Latest CMOS image sensors perform even better than CCD on key image quality parameters:

- Sensitivity in low light- MTF- Blooming & smear- Dynamic range

• Even with high quality of the starting image sensor, image processing is required by the camera manufacturer.

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4 electrons read noise

CMOS (IMX174)

CCD (ICX674)

Performance improvements with CMOS Low light color (300 mLux)

The light level of 0.3 Lux is just an example; it doesn’t show the limiting light levels of these image sensors.

9 electrons read noise

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Performance improvements with CMOSQE/Dark noise (Sensitivity) vs. Various Wavelengths

the CMOS sensor (IMX174) is more

sensitive than the CCD sensor (ICX674) at all wavelengths and at

increased temperatures

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Performance improvements with CMOS MTF

The improved MTF of the CMOS sensor (IMX174)

over the CCD sensor (ICX674) is most evident

in the longer wavelengths

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TMX7 (ICX674) TMX74 (IMX174)

Performance improvements with CMOSBlooming and Smear

CCDICX674

CMOSIMX174

Smear only occurs with CCD image sensor

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Performance improvements with CMOSBlooming and Smear

CMOSIMX174

CCDICX674

the CCD sensor has a more severe smear

artifact from the flash outside the integration

period

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CMOS performance must be maximized by camera manufacturer

Competitor IMX174 Camera Adimec TMX74 (IMX174 camera)

Image sensor related image processing is required and should be calibrated over temperature, such as color processing,

defect pixel correction, uniformity correction (column, row, shading), and linearity

correction. 

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Competitor IMX174 Camera Adimec TMX74

All image processing is done to optimize image

quality and take full advantage of the MTF of

the image sensor..This is critical for real-time decision-making.

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CCD versus CMOS 2015 Notes

• The images included are stills from real time video at Full HD and 60 frames per second.

• The light level of 0.3 Lux is just an example; it doesn’t show the limiting light levels of these image sensors.

• The CCD camera uses a top quality image sensor. • Color images are color-processed; lower light levels can be

achieved with monochrome image sensors. • We wanted to compare real life situations so the cameras are

uncooled and running at full speed around room temperature.• The scene is just package materials to show off what can be

done.

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