Hi,
Using Cleye SDK, when all values for geometrical transformations and lens correction are set to 0, are these calculations internally bypassed, in order to have lower cpu usage ?
I have the same question regarding horizontal and vertical flip.
thanks

I’ve read on OV7720 datasheet that DSP processor has hardware built-in lens correction algorithms but i have no idea if this driver is using it.

JYG - 03 February 2010 10:56 PM

Hi,
Using Cleye SDK, when all values for geometrical transformations and lens correction are set to 0, are these calculations internally bypassed, in order to have lower cpu usage ?
I have the same question regarding horizontal and vertical flip.
thanks

Currently for developer’s convenience, the transforms are turned on even if the parameters are 0. All of the transforms run in linear time and it doesn’t matter if its just a horizontal flip or the lens correction.
We will be adding the two additional modes to the SDK API so that the developer can chose not to use these transforms at all and also be able to get the raw bayer pattern frame output from the camera.

AlexP

Futhark - 06 February 2010 09:05 AM

I’ve read on OV7720 datasheet that DSP processor has hardware built-in lens correction algorithms but i have no idea if this driver is using it.

The lens correction that the datasheet refers to is the lens brightness correction and not the full lens un-distortion transform.

AlexP

AlexP - 06 February 2010 09:21 AM

We will be adding the two additional modes to the SDK API so that the developer can chose not to use these transforms at all and also be able to get the raw bayer pattern frame output from the camera.

AlexP

That’s great, good news !