Sharpness metadata and bins positin

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2
1

Hello,
I’m using libargus API with the nvidia jetson TX2 board, I’m interested in metadata acquisition, I’ve gathered the sharpness metadata for the four channels R, B, gEVEN and gODD, but the values I got are too small, even when I’m exposing an object with high frequencies in front of the sensor, the maximum value still less than 0.02, is that normal or something is wrong? As I also have another question concerning bins position across the image, after printing some bins information like :
-number of bins = 64x64
-bins size = 32x16 px
-bins interval = 40x30 px which means on the x position the interval between the end of the bin and the next one is 8 px and on the y position 14 px.

my sensor resolution = 2592x1944 px, and according to bins information above we have only (64x32+63x8) x (64x16+63x14 )= 2552x1906 px!!, which means bins don’t cover the full image!!

Thank you so much in advance for your answers.

3

hello machour,

please check MMAPI documentation, Argus::Ext::IBayerSharpnessMap for reference,
thanks

4

Hello Jerry,
I’ve already checked the libargus documentation in detail, but didn’t help for my question, especially for the bins position on the image it’s not clear.

Thank you

5

even when I’m exposing an object with high frequencies in front of the sensor, the maximum value still less than 0.02, is that normal or something is wrong?
You could sum up all value in one bin,

and check whether the value increase when camera point at high freq image

and decrease when camera point at low freq image.

my sensor resolution = 2592x1944 px, and according to bins information above we have only (64x32+63x8) x (64x16+63x14 )= 2552x1906 px! !, which means bins don’t cover the full image !!

yes, it is expected, check info in header

…/include/Argus/Ext/BayerSharpnessMap.h