Predator Vision (work in progress)

I thought it would be a good time to share what I am currently working on. A friend from work and I are building costumes. Not necessarily for Halloween, but because I’ve always wanted a predator outfit. Sure you can buy them online, but not with the features I’m adding. I am going to mount a webcam on the mask and put some video glasses in it as well. Something like these:

I might have two webcams, so one can be infrared and the other normal. Making a webcam into an infrared cam is really easy. There are plenty of resources on doing it:

The code is really simple (so far). I have been thinking about changing the pixel colors to mimic thermal vision. Anything moving is highlighted between yellow and red, pending on how high the deferance is. That is still an idea, and I am currently at a block. I will post updates when they come.


#load what we need
from VideoCapture import Device
import pygame, Image, sys, ImageChops, time
from pygame.locals import *

#grab handle
cam = Device()

#find out the resolution
res = cam.getImage()
res = res.size

#initiate pygame
screen = pygame.display.set_mode(res)
pygame.display.set_caption("Predator Vision: by Tech B")

while 1:
    #check for quit
    for event in pygame.event.get():
        if event.type == pygame.QUIT: sys.exit()

    #grab two images
    im1 = cam.getImage()
    #you will need to wait a sec before taking another image
    #if not, the screen will remain black and buggy
    im2 = cam.getImage()

    #im2-im1 per pixel
    diff = ImageChops.difference(im1,im2)

    #convert image to pygame type and then display
    shot = pygame.image.frombuffer(diff.tostring(), res, "RGB")

I can now change the color of the “movement” pixels.
Add this code between
diff = ImageChops.difference(im1,im2)
shot = pygame.image.frombuffer(diff.tostring(), res, “RGB”)

n = diff.load()
for x in range(0,res[0]):
    for y in range(0,res[1]):
        if n[x,y] > (25,25,25):
            n[x,y] = (255,0,0)
            n[x,y] = (0,0,0)

No Movement

With Movement


About Tech B.

I am currently employed as a tech support rep for Frontier DSL internet and Dail-Up service. If you live on the East Coast and have Frontier or the old Verizon, you may have spoken with me at one point. I do side jobs programming and building things for people. I know Python better than any language in my toolbox. I can also develop Android Apps, which are Java based. Other languages include C , VB/VB.NET, some C#, PBASIC, Batch, Javascript, and some PHP. I love microcontrollers and interfacing with the outside world. I am currently working with Arduinos, which are amazing. Also I can work with the Basic Stamp family of microcontrollers; future development includes FPGA and embedded Linux. I was going to school, but have financial issues at the moment that are keeping me from the books. I plan on going back in the next couple semesters and finishing up my Associates in IT, then perusing a BS in computer science.
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One Response to Predator Vision (work in progress)

  1. Pingback: Taking image parts - Bizzteams

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