## Contents

```% Author: John D'Errico
% Release: 1.0
% Release date: 9/19/06
% example usages of fuzzycolor
```

## Testing single colors for a given color name match

```% Is [1 0.1 0.1] a red?   (YES)
fuzzycolor([1 0.1 0.1],'red')

% Is [1 0.1 0.1] a blue?  (NO)
fuzzycolor([1 0.1 0.1],'blue')
```
```ans =

1

ans =

0

```

## Some colors are near the edge

```% Is [1 0.3 0.3] a red?   (Yes, but perhaps only marginally so.)
fuzzycolor([1 0.3 0.3],'red')
```
```ans =

0.49

```

## Testing a single color for any match from the color name database

```% What color is [1 1 .2]? (It should be a variant of yellow.)
[iscolor,colornames] = fuzzycolor([1 1 .2])
```
```iscolor =

0     0     0     0     0     1     0     0     0     0     0     0     0

colornames =

Columns 1 through 8

'red'    'green'    'blue'    'neutral'    'pastel'    'yellow'    'flesh'    'cyan'

Columns 9 through 13

'magenta'    'black'    'white'    'purple'    'brown'

```

## A set of random color patches

```CP = sortrows(rand(10000,3));

figure
displaycolorpatches(CP)
``` ## Which patches were essentially red?

```isc = fuzzycolor(CP,'red')>0.5;
figure
displaycolorpatches(CP(isc,:))
``` ## Which patches were essentially blue?

```% Note that 'b' is not an acceptable abbreviation for 'blue', as there
% are also other colornames that would match 'b'.
isc = fuzzycolor(CP,'blue')>0.5;
figure
displaycolorpatches(CP(isc,:))
``` ## Which patches were essentially green?

```% Note that 'g' is an acceptable abbreviation for 'green'
isc = fuzzycolor(CP,'g')>0.5;
figure
displaycolorpatches(CP(isc,:))
``` ## Which patches were essentially a flesh tone?

```isc = fuzzycolor(CP,'flesh')>0.5;
figure
displaycolorpatches(CP(isc,:))
``` ## An actual jpg image

```imrgb = imread('monet_adresse.jpg');

figure
image(imrgb)
``` ## Which pixels were green? Turn ALL the other pixels to white.

```indg = find(fuzzycolor(double(imrgb)/255,'green')<0.5);
n = size(imrgb,1)*size(imrgb,2);

img = imrgb;
img([indg;indg+n;indg+2*n]) = 255;

figure
image(img)
``` 