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Approximately 9,800 square feet, assuming your drawing is accurate. I hastily colored in the image using MS Paint (not perfect, since JPG compression added a bunch of fuzzy grayscale values).

Then using MATLAB with the image processing toolbox:

width = 235; % establish scale parameters
height = 300;
img = imread('areatest.jpg'); % read image in 
bwImg = im2bw(img,0.5); % convert from JPG to binary BW
% find black pixels, divide by total image area, 
% and scale to square footage depicted in drawing:    
dwArea = sum(sum(~bwImg))/numel(bwImg)*width*height; 

You may be able to work this online, with the compile online website. However, I'm not sure if it can read in files from your hard drive.

Approximately 9,800 square feet, assuming your drawing is accurate. I hastily colored in the image using MS Paint (not perfect, since JPG compression added a bunch of fuzzy grayscale values).

Then using MATLAB with the image processing toolbox:

width = 235; % establish scale parameters
height = 300;
img = imread('areatest.jpg'); % read image in 
bwImg = im2bw(img,0.5); % convert from JPG to binary BW
% find black pixels, divide by total image area, 
% and scale to square footage depicted in drawing:    
dwArea = sum(sum(~bwImg))/numel(bwImg)*width*height; 

Approximately 9,800 square feet, assuming your drawing is accurate. I hastily colored in the image using MS Paint (not perfect, since JPG compression added a bunch of fuzzy grayscale values).

Then using MATLAB with the image processing toolbox:

width = 235; % establish scale parameters
height = 300;
img = imread('areatest.jpg'); % read image in 
bwImg = im2bw(img,0.5); % convert from JPG to binary BW
% find black pixels, divide by total image area, 
% and scale to square footage depicted in drawing:    
dwArea = sum(sum(~bwImg))/numel(bwImg)*width*height; 

You may be able to work this online, with the compile online website. However, I'm not sure if it can read in files from your hard drive.

1
source | link

Approximately 9,800 square feet, assuming your drawing is accurate. I hastily colored in the image using MS Paint (not perfect, since JPG compression added a bunch of fuzzy grayscale values).

Then using MATLAB with the image processing toolbox:

width = 235; % establish scale parameters
height = 300;
img = imread('areatest.jpg'); % read image in 
bwImg = im2bw(img,0.5); % convert from JPG to binary BW
% find black pixels, divide by total image area, 
% and scale to square footage depicted in drawing:    
dwArea = sum(sum(~bwImg))/numel(bwImg)*width*height;