CoCalc -- individ.ipynb

³³ views

Kernel: Octave

In [1]:

I=imread('IMG_20171204_155743.jpg');
I2=0.2989.*I(:,:,1)+0.5870.*I(:,:,1)+0.114.*I(:,:,1);
I2=I(:,:,3);
I2=I2(:,300:1:end-420);
imshow(I2)

Out[1]:

In [0]:

In [2]:

hist(I2(:),200)
title('gist')
xlabel('x')
ylabel('y')

Out[2]:

In [4]:

I3=I2;
r=115
I3(I2<r)=0;
I3(I2>=r)=255;
imshow(I3)

Out[4]:

r =  115

In [12]:

size(I2)

Out[12]:

ans =

   2340   3441

In [5]:

I4=I3(:,1:1300);
p1=numel (I4(I4==0))
imshow(I4)

Out[5]:

p1 =  1382982

In [6]:

I5=I3(:,1200:end);
p2=numel(I5(I5==0))
imshow(I5)

Out[6]:

p2 =  978026

In [14]:

p3=p1.*88./p2

Out[14]:

p3 =  124.44

In [17]:

p4=p2.*p3./p1

Out[17]:

p4 =  88

In [0]: