Created
September 19, 2020 12:19
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import cv2 | |
import time | |
import busio | |
import board | |
import numpy as np | |
import seaborn as sns | |
import matplotlib.pyplot as plt | |
import adafruit_amg88xx | |
i2c_bus = busio.I2C(board.SCL, board.SDA) | |
sensor = adafruit_amg88xx.AMG88XX(i2c_bus) | |
time.sleep(.1) | |
filepath = "vtest.avi" | |
# cap = cv2.VideoCapture(filepath) | |
# Webカメラを使うときはこちら | |
cap = cv2.VideoCapture(0) | |
cap.set(cv2.CAP_PROP_FRAME_WIDTH, 480) | |
cap.set(cv2.CAP_PROP_FRAME_HEIGHT, 480) | |
avg = None | |
gain = 10 | |
offset_x= 0.2 | |
offset_green = 0.6 | |
def vconcat_resize_min(im_list, interpolation=cv2.INTER_CUBIC): | |
w_min = min(im.shape[1] for im in im_list) | |
im_list_resize = [cv2.resize(im, (w_min, int(im.shape[0] * w_min / im.shape[1])), interpolation=interpolation) | |
for im in im_list] | |
return cv2.vconcat(im_list_resize) | |
def sigmoid(x, gain=1, offset_x=0): | |
return ((np.tanh(((x+offset_x)*gain)/2)+1)/2) | |
def colorBarRGB(x): | |
x = (x * 2) - 1 | |
red = sigmoid(x, gain, -1*offset_x) | |
blue = 1-sigmoid(x, gain, offset_x) | |
green = sigmoid(x, gain, offset_green) + (1-sigmoid(x,gain,-1*offset_green)) | |
green = green - 1.0 | |
return (blue * 1024,green * 1024,red * 1024) | |
count = 0 | |
min_deg = max_deg = 0 | |
while True: | |
pixels = np.array(sensor.pixels) | |
# 1フレームずつ取得する。 | |
ret, frame = cap.read() | |
if not ret: | |
break | |
# グレースケールに変換 | |
gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY) | |
# 比較用のフレームを取得する | |
if avg is None: | |
avg = gray.copy().astype("float") | |
continue | |
# 現在のフレームと移動平均との差を計算 | |
cv2.accumulateWeighted(gray, avg, 0.95) | |
frameDelta = cv2.absdiff(gray, cv2.convertScaleAbs(avg)) | |
# デルタ画像を閾値処理を行う | |
thresh = cv2.threshold(frameDelta, 3, 255, cv2.THRESH_BINARY)[1] | |
# 画像の閾値に輪郭線を入れる | |
contours, hierarchy = cv2.findContours(thresh.copy(), cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE) | |
frame = cv2.drawContours(frame, contours, -1, (0, 255, 0), 3) | |
# 結果を出力 | |
deg = pixels.max() | |
# min_deg = min(deg, min_deg) | |
# max_deg = max(deg, max_deg) | |
min_deg = 25 | |
max_deg = 40 | |
if count % 5 == 0: | |
nor_deg = (deg - min_deg) / (max_deg - min_deg) | |
colors = colorBarRGB(nor_deg) | |
# print(colors) | |
new_img = np.zeros(shape=(200,480,3),dtype="uint8") | |
new_img[:, :] = colors | |
# print(frame.shape) | |
# print(frame.dtype) | |
# print(new_img.shape) | |
frame = vconcat_resize_min([frame, new_img]) | |
# frame = cv2.vconcat([frame, new_img]) | |
w, h = np.unravel_index(np.argmax(pixels), pixels.shape) | |
# frame = cv2.drawMarker(frame, (w * 60 + 50, h * 60 + 50), color=(255, 0, 0), markerType=cv2.MARKER_CROSS, markerSize=20, thickness=6) | |
frame = cv2.putText(frame, f"{'{:.2f}'.format(deg)} deg C", (50, 600), cv2.FONT_HERSHEY_SIMPLEX, 2.0, (0, 0, 0), thickness=5) | |
cv2.imshow("Frame", frame) | |
key = cv2.waitKey(30) | |
# print(cap.get(cv2.CAP_PROP_FPS)) | |
# print(w, h) | |
count += 1 | |
if key == 27: | |
break | |
cap.release() | |
cv2.destroyAllWindows() |
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