Raspberry Pi AMG8833热像仪，如何打印检测到的最高温度？

问题描述

我一直在关注本教程-https://www.instructables.com/Thermal-Camera-AMG833-Raspberry-Pi/

运行正常，如图所示。我可以在窗口中看到图形化的温度参考。

代码：

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 = 26

#high range of the sensor (this will be red on the screen)
MAXTEMP = 32

#how many color values we can have
COLORDEPTH = 1024

os.putenv('SDL_FBDEV','/dev/fb1')
pygame.init()

#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

lcd = pygame.display.set_mode((width,height))

lcd.fill((255,0))

pygame.display.update()
pygame.mouse.set_visible(False)

lcd.fill((0,0))
pygame.display.update()

#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)
    
while(1):

    #read the pixels
    pixels = sensor.readPixels()
    pixels = [map(p,MINTEMP,MAXTEMP,COLORDEPTH - 1) for p in pixels]
    
    #perdorm interpolation
    bicubic = griddata(points,pixels,(grid_x,grid_y),method='cubic')
    
    #draw everything
    for ix,row in enumerate(bicubic):
        for jx,pixel in enumerate(row):
            pygame.draw.rect(lcd,colors[constrain(int(pixel),COLORDEPTH- 1)],(displayPixelHeight * ix,displayPixelWidth * jx,displayPixelHeight,displayPixelWidth))
    
    pygame.display.update()

https://github.com/adafruit/Adafruit_AMG88xx_python/blob/master/examples/thermal_cam.py

但是如何将最高的测得温度打印到控制台上，以便以后可以使用该值？

谢谢

解决方法

要获得每一帧的最大值，只需在print(max(pixels))之后添加pixels = sensor.readPixels()即可。

这应该足够快，以至于不会对脚本的其余部分造成任何明显的影响。