IR Camera Server
Posted by Anonymous on Sun 8th Apr 2018 00:20
raw | new post

#!/usr/bin/python
#python -m CGIHTTPServer

import sys
sys.path.append('.')
from Adafruit_AMG88xx import Adafruit_AMG88xx
#import pygame
import os
import math
import time

import numpy as np
from scipy.interpolate import griddata

from colour import Color

#low range of the sensor (this will be blue on the screen)
MINTEMP = 15

#high range of the sensor (this will be red on the screen)
MAXTEMP = 30

#how many color values we can have
COLORDEPTH = 1024


#sys.stdout.write("Content-type: text/html \r\n\r\n")
#sys.stdout.write("<!doctype html><html><head><title>Hello CGI</title></head>")
#sys.stdout.write("<body>")

sys.stdout.write("Content-type: image/svg+xml \r\n\r\n")


#initialize the sensor
sensor = Adafruit_AMG88xx()

points = [(math.floor(ix / 8), (ix % 8)) for ix in range(0, 64)]
grid_x, grid_y = np.mgrid[0:7:32j, 0:7:32j]

#sensor is an 8x8 grid so lets do a square
height = 240
width = 240

#the list of colors we can choose from
blue = Color("indigo")
colors = list(blue.range_to(Color("red"), COLORDEPTH))

#create the array of colors
colors = [(int(c.red * 255), int(c.green * 255), int(c.blue * 255)) for c in colors]

displayPixelWidth = width / 30
displayPixelHeight = height / 30


#some utility functions
def constrain(val, min_val, max_val):
    return min(max_val, max(min_val, val))

def map(x, in_min, in_max, out_min, out_max):
  return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min

#let the sensor initialize
time.sleep(.1)

#read the pixels
pixels = sensor.readPixels()
pixels = [map(p, MINTEMP, MAXTEMP, 0, COLORDEPTH - 1) for p in pixels]

#perdorm interpolation
bicubic = griddata(points, pixels, (grid_x, grid_y), method='cubic')

print("<svg xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\" width=\"240\"  height=\"240\"  id=\"yourimage\" >")

#draw everything
for ix, row in enumerate(bicubic):
    for jx, pixel in enumerate(row):
        theColor=colors[constrain(int(pixel), 0, COLORDEPTH- 1)]
        theX=(displayPixelHeight * ix)
        theY=(displayPixelWidth * jx)
        dispColor=str(theColor[0])+","+str(theColor[1])+","+str(theColor[2]);
        #print("dispColor="+dispColor);
        #print("theColor["+str(theColor)+"] "+str(theX)+","+str(theY)+" ")
        print("<rect x=\""+str(theX)+"\" y=\""+str(theY)+"\" width=\"8\" height=\"8\"  style=\"fill:rgb("+dispColor+");\"/>")

        #pygame.draw.rect(lcd, colors[constrain(int(pixel), 0, COLORDEPTH- 1)], (displayPixelHeight * ix, displayPixelWidth * jx, displayPixelHeight, #displayPixelWidth))


#print("</svg>")
sys.stdout.write("</svg>")

#python -m CGIHTTPServer # run from command line
#index.html
#<head>
# <nometa http-equiv="refresh" content="2" />
#</head>
#<img src="./cgi-bin/cam.py" id="yourimage">
#<script>
#window.setInterval(function()
#{
#    document.getElementById('yourimage').src = "./cgi-bin/cam.py?random="+new Date().getTime();
#},5000);
#</script>
#</body>