Grid, Counter, Histogram

[tclift123]

I'm looking to make a macro for wax valve spreading. The problem is the lack of uniformity with the wax valve spread. The spread is further on the corners than in the center of the rectangular block. I'd like to see the furtherest distance that the wax traveled, but also see the distribution of the wax spread.


Assuming my image is black and white, I'd like to create a grid of .1mm X .1 mm squares along the area of the photo. If the squares have any black color, I'd like to store them in a recursive counter. I'd like to plot a histogram of the stored values along each row of the grid being one bin.

[Olivier Burri]

Hello,

Here is a suggestion for a much faster processing than creating ROI grids on black and white images.

Convert your B/W image to 32-bit

Rescale your black and white image so that one pixel represents 0.1mm with interpolation.

Apply a threshold to match your condition (only pixels > 0, or some other value that represents the fraction of black color)

Then you can directly measure the histogram.


For having a per row counter, you can just navigate the whole length of the image like so
https://gist.github.com/lacan/27e9103eb83efc2de051

Best

Oli

> -----Original Message-----
> From: ImageJ Interest Group [mailto:[hidden email]] On Behalf Of
> tclift123
> Sent: Monday, October 26, 2015 16:55
> To: [hidden email]
> Subject: Grid, Counter, Histogram
>
> I'm looking to make a macro for wax valve spreading. The problem is the lack
> of uniformity with the wax valve spread. The spread is further on the corners
> than in the center of the rectangular block. I'd like to see the furtherest
> distance that the wax traveled, but also see the distribution of the wax
> spread.
>
>
> Assuming my image is black and white, I'd like to create a grid of .1mm X .1
> mm squares along the area of the photo. If the squares have any black color,
> I'd like to store them in a recursive counter. I'd like to plot a histogram of the
> stored values along each row of the grid being one bin.
>
>
>
>
> --
> View this message in context: http://imagej.1557.x6.nabble.com/Grid-
> Counter-Histogram-tp5014772.html
> Sent from the ImageJ mailing list archive at Nabble.com.
>
> --
> ImageJ mailing list: http://imagej.nih.gov/ij/list.html

--
ImageJ mailing list: http://imagej.nih.gov/ij/list.html