Morpho unveils in-camera HDR and Rolling Shutter Correction tech (for cellphones)

[Steve Castle]

http://image-sensors-world.blogspot.com/2011/02/morpho-unveiled-hdr-and-rolling-shutter.html

The rolling shutter correction technology is a pretty novel idea, it uses the built-in gyro and accelerometer within a cellphone to determine the pitch, yaw, and roll of the camera and compensate the level of rolling shutter. Being that gyros are very cheap (~$3), it'd be interesting to see if this same technology can be implemented on other cameras.

The HDR tech on the other hand is pretty standard stuff, basically it takes two or more streams at different exposures and combines them together in-camera. Its not nearly as impressive as the HDR tech that Panavision is doing with their 37 megapixel DYNAMAX-35 sensor.

 

[dantewaters]

Interesting... Who are these guys!?

 

[combatentropy]

First of all, thank you.

But either I missed it, or manufacturers are doing a really bad job at explaining why global shutter is not more common in CMOS.

For years there have been many industrial cameras with global shutter CMOS sensors. As a recent example, the Baumer HXC40 has global shutter and can do 180 FPS at 2048x2048 resolution. And global shutter seems not to have hindered its dynamic range (90 dB). And the whole camera costs $1,500. So the whole cost thing doesn't seem to affect this guy.

Besides cost, technical reasons are often thrown up: global shutter would reduce dynamic range, frame rate, etc. I think most of us would be very happy with an S35 global-shutter sensor with just 60fps at 2K. In fact, if you just took the Kodak 2/3" sensor that is in the Ikonoskop (and some industrial cameras) or CMOSIS's global-shutter 2/3" CMOS, and stretched one of them to S35 size, you'd have a hit!

Here are global shutter sensors, announced or in production, that far exceed those specs:

• Vision Research Phantom Flex, whose Super-35mm-sized global-shutter CMOS does up to 2,570 frames per second at 1920x1080 resolution and has a sensitivity of ISO 1200.
• Canon's mammoth 202 x 205 mm (40x the size of full-frame 35mm) that does 60 frames per second
• Cypress's full-frame 35mm global shutter CMOS that does 53 frames per second at its full 25-megapixel resolution
• CMOSIS's APS-C (Super 35mm) global shutter CMOS that does 300 frames per second at its full 12-megapixel resolution

 

[Rick Burnett]

This isn't going to fix all rolling shutter problems, because they are dependent also on the relative motion of objects in a frame. Sure if you pan fast, but, what if you have something relatively motionless in a pan that you are tracking? It will look fine while the background behind said object is all slanted.

The only way to get rid of it is global shutter. Period. (Whether that be electronic or mechanical)