Python Forum

I was trying to show a live video recording someone with a effect that shows, all the time, the silhouettes in different colors and the background in black.
-I'm using a raspberry pi 2
-using a USB camera
-as plus i wanna use buttons to change the color of the silhouettes

i get to show the video but i dont know what can i do to get the effect, i am new using python, may be u find extra lines or maybe u can tell me if it is better to use the picamera instead the usb camera and which.

#!/usr/bin/env python
# encoding: latin1
import pygame, sys, time
import pygame.camera
from pygame.locals import *

pygame.init()
pygame.camera.init()

dw=1318
dh=736
colortexto=(0,12,0)
blanco = (255,255,255)
black= (0,0,0)
rojo =  (250, 0, 0)
rojox =(255, 77, 77)
azul =  (0, 255, 255)
azulx =(128, 255, 255)
verde=  (0, 255, 0)
verdex=(102, 255, 102)
amarillo=(255, 255, 0)
amarillox=(255, 255, 128)
morado=(153, 51, 255)
moradox=(255, 102, 171)
rosa=(255, 0, 85)
rosax=(255, 102, 153)

gameDisplay = pygame.display.set_mode((dw, dh))
screen = pygame.display.set_mode((dw, dh))
pygame.display.set_caption("CEM'S\'")
clock = pygame.time.Clock()

cam= pygame.camera.Camera("/dev/video0",(1250,600))
cam.start()
            
def text_objects(text, font):
    textSurface = font.render(text, True, colortexto)
    return textSurface, textSurface.get_rect()

def button(msg,x,y,w,h,ic,ac,action=None):
    mouse = pygame.mouse.get_pos()
    click = pygame.mouse.get_pressed()
    #print(click)
    if x+w > mouse[0] > x and y+h > mouse[1] > y:
        pygame.draw.rect(gameDisplay, ac,(x,y,w,h))

        if click[0] == 1 and action != None:
            action()         
    else:
        pygame.draw.rect(gameDisplay, ic,(x,y,w,h))

    smallText = pygame.font.SysFont("comicsansms",20)
    textSurf, textRect = text_objects(msg, smallText)
    textRect.center = ( (x+(w/2)), (y+(h/2)) )
    gameDisplay.blit(textSurf, textRect)

def main():

    while 1:
        image = cam.get_image()
        screen.blit(image,(20,0))
####        pygame.display.update()
        button("Rosa",      104,626,150,50,     rosa,rosax)
        button("Morado",    264,626,150,50,     morado,moradox)
        button("Blanco",    424,626,150,50,     blanco,blanco)
        button("Amarillo",  584,626,150,50,    amarillo,amarillox)
        button("Rojo",      744,626,150,50,    rojo,rojox)
        button("Azul",      904,626,150,50,    azul,azulx)
        button("verde",     1064,626,150,50,    verde,verdex)

        for event in pygame.event.get():
            if event.type==pygame.QUIT:
                pygame.quit()
                quit()

        pygame.display.update()
        clock.tick(15)    

            
main()
pygame.quit()
quit()   

i want something like this

[Image: ?kh=-1&uddg=http%3A%2F%2Fshmector.com%2F...715168.png]

def main():
 
    while 1:
        image = cam.get_image()
        pxarray = pygame.PixelArray(image)                        #added
        pxarray.replace((0,0,0),(0,0,0),0.4,(1,1,1))              #added
        pxarray.replace((255,255,255),(255,255,255),0.9,(1,1,1))  #added
        del pxarray                                               #added
        screen.blit(image,(20,0))
####        pygame.display.update()

try add the 4 extra lines between image = cam.get_image() and screen.blit(image,(20,0))
this worked with single image, havent tested with camera. basically just use pixelarray to replace colors into black and white images. not accurate but close to what shown in your image.