Hi there,

i am trying to obtain data from pixel Images.

I know its possible to read a line and obtain the r/g/b values of one specific pixel.

Still i can´t fully wrap my head around how to archive two things:

1. How can I assign a certain area within a picture (for example a square in the upper left of a png) to be read out?

2. How can I obtain data such as average gray value ?

I am just starting with processing so please bare with me if my question is somewhat stupid.

I am searching for days now and i just can´t seem to find any useful information.

Every help.. or link to tutorial would be much appreciated.

Thank you very much!

i am trying to obtain data from pixel Images.

I know its possible to read a line and obtain the r/g/b values of one specific pixel.

Still i can´t fully wrap my head around how to archive two things:

1. How can I assign a certain area within a picture (for example a square in the upper left of a png) to be read out?

2. How can I obtain data such as average gray value ?

I am just starting with processing so please bare with me if my question is somewhat stupid.

I am searching for days now and i just can´t seem to find any useful information.

Every help.. or link to tutorial would be much appreciated.

Thank you very much!

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