Python : Detect Color Then Click Color

Question

I am trying to take a screen shot, check the screen shot for a certain color, if the color is found then click on it.

The problem I'm having is that the RGB values of the color has to be exact.

I was wondering if it was possible to convert the image to an image with very few colors.

I'm sorry for the clutter. I am not properly trained. I am just obsessed with coding now.

Thank you for taking the time to read this.

import os, sys
import Image, ImageGrab, ImageOps
import time, random
from random import randrange
import win32api, win32con
from numpy import *


# Globals
# ------------------

x_pad = 0
y_pad = 0


# Screen Grab Function
def screenGrab():
    b1 = (x_pad + 1,y_pad+1,x_pad+1921,y_pad+1081)
    im = ImageGrab.grab()
    ##im.save(os.getcwd() + '\\Snap__' + str(int(time.time())) +'.png', 'PNG')
    return im

## Grab Mouse Position
## MousePos = win32api.GetCursorPos()
## print MousePos

## Type in shell to grab RGB color
## im = screenGrab()
## im.getpixel(MousePos)

## Check Mouse Position for Black
## s = screenGrab()
## if s.getpixel(MousePos) <= (96, 96, 96):
    ##print "I see black."   

# Main 

x = 920
y = 465

# Color Check Then Stop/Click Loop

while True:

    s = screenGrab()
    s.convert("P", palette=Image.ADAPTIVE, colors=5)
    x = x + 10
    xy = (x, y)
    if s.getpixel(xy)== (255, 255, 255):
        break
    else:
        win32api.SetCursorPos((x, y))
        print x
        print y

        if x == 1250:
            x = 700
            y = y + 10
            if y == 985:
                break

How do I use "s.convert("P", palette=Image.ADAPTIVE, colors=5)" correctly so that I limit the range of colors to something like (0, 255, 0)?

Could you be more precise where is a problem and your question? — daniula
– daniula, Commented Apr 27, 2014 at 23:44
How do I use "s.convert("P", palette=Image.ADAPTIVE, colors=5)" correctly so that I limit the range of colors to something like (0, 255, 0)? — user3577821
– user3577821, Commented Apr 27, 2014 at 23:54

user2961646 · Accepted Answer · 2014-04-28 02:36:03Z

1

Instead of simplifying your color why don't you give range of RGB values when trying to find what color it is?

(range(200,220), range(200,220), range(200,220))

This would work around changing the RGB values of all the pixels.

answered Apr 28, 2014 at 2:36

user2961646

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12 Comments

user2961646 Over a year ago

I know this is not exactly what you might want, but it is a work-around

user3577821 Over a year ago

Thank you. That is pretty much what I was looking for. I can remove the s.convert line now right?

user3577821 Over a year ago

"if s.getpixel(xy)== (range(0, 255), range(0, 255), range(0, 255)): break" That should make it break on any color right? Bah, this is challenging. =(

user2961646 Over a year ago

You can remove the s.convert line, and yes, it would make it break on every possible color.

user3577821 Over a year ago

For some reason it's not breaking. The code just runs... =(

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