opencv 特定边界框颜色

ih99xse1  于 2023-03-13  发布在  其他
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有人能帮我修改这个现有的代码,以使用不同的颜色为边界框我想检测?例如:如果一个人检测边界框将是红色的,如果动物或宠物检测将是绿色的,其他对象将是蓝色的,已经探索了一个星期仍然没有修改它的运气,如果任何人可以解释或帮助将不胜感激。谢谢!

import os
import argparse
import cv2
import numpy as np
import sys
import glob
import importlib.util

parser = argparse.ArgumentParser()
parser.add_argument('--modeldir', help='Folder the .tflite file is located in', required=True)
parser.add_argument('--graph', help='Name of the .tflite file, if different than detect.tflite', default='detect.tflite')
parser.add_argument('--labels', help='Name of the labelmap file, if different than labelmap.txt', default='labelmap.txt')
parser.add_argument('--threshold', help='Minimum confidence threshold for displaying detected objects', default=0.5)
parser.add_argument('--image', help='Name of the single image to perform detection on. To run detection on multiple images, use --imagedir', default=None)
parser.add_argument('--imagedir', help='Name of the folder containing images to perform detection on. Folder must contain only images.', default=None)
parser.add_argument('--edgetpu', help='Use Coral Edge TPU Accelerator to speed up detection', action='store_true')

args = parser.parse_args()

MODEL_NAME = args.modeldir
GRAPH_NAME = args.graph
LABELMAP_NAME = args.labels
min_conf_threshold = float(args.threshold)
use_TPU = args.edgetpu


IM_NAME = args.image
IM_DIR = args.imagedir

if (IM_NAME and IM_DIR):
    print('Error! Please only use the --image argument or the --imagedir argument, not both. Issue "python TFLite_detection_image.py -h" for help.')
    sys.exit()

if (not IM_NAME and not IM_DIR):
    IM_NAME = 'test1.jpg'

pkg = importlib.util.find_spec('tflite_runtime')
if pkg:
    from tflite_runtime.interpreter import Interpreter
    if use_TPU:
        from tflite_runtime.interpreter import load_delegate
else:
    from tensorflow.lite.python.interpreter import Interpreter
    if use_TPU:
        from tensorflow.lite.python.interpreter import load_delegate

if use_TPU:
    if (GRAPH_NAME == 'detect.tflite'):
        GRAPH_NAME = 'edgetpu.tflite'


CWD_PATH = os.getcwd()

if IM_DIR:
    PATH_TO_IMAGES = os.path.join(CWD_PATH,IM_DIR)
    images = glob.glob(PATH_TO_IMAGES + '/*')

elif IM_NAME:
    PATH_TO_IMAGES = os.path.join(CWD_PATH,IM_NAME)
    images = glob.glob(PATH_TO_IMAGES)

PATH_TO_CKPT = os.path.join(CWD_PATH,MODEL_NAME,GRAPH_NAME)

PATH_TO_LABELS = os.path.join(CWD_PATH,MODEL_NAME,LABELMAP_NAME)

with open(PATH_TO_LABELS, 'r') as f:
    labels = [line.strip() for line in f.readlines()]

if labels[0] == '???':
    del(labels[0])

if use_TPU:
    interpreter = Interpreter(model_path=PATH_TO_CKPT, experimental_delegates=[load_delegate('libedgetpu.so.1.0')])
    print(PATH_TO_CKPT)
else:
    interpreter = Interpreter(model_path=PATH_TO_CKPT)

interpreter.allocate_tensors()

input_details = interpreter.get_input_details()
output_details = interpreter.get_output_details()
height = input_details[0]['shape'][1]
width = input_details[0]['shape'][2]

floating_model = (input_details[0]['dtype'] == np.float32)

input_mean = 127.5
input_std = 127.5

for image_path in images:    
    image = cv2.imread(image_path)
    image_rgb = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)
    imH, imW, _ = image.shape 
    image_resized = cv2.resize(image_rgb, (width, height))
    input_data = np.expand_dims(image_resized, axis=0)

    if floating_model:
        input_data = (np.float32(input_data) - input_mean) / input_std

    interpreter.set_tensor(input_details[0]['index'],input_data)
    interpreter.invoke()

    boxes = interpreter.get_tensor(output_details[0]['index'])[0] # Bounding box coordinates of detected objects
    classes = interpreter.get_tensor(output_details[1]['index'])[0] # Class index of detected objects
    scores = interpreter.get_tensor(output_details[2]['index'])[0] # Confidence of detected objects

    for i in range(len(scores)):
        if ((scores[i] > min_conf_threshold) and (scores[i] <= 1.0)):
            ymin = int(max(1,(boxes[i][0] * imH)))
            xmin = int(max(1,(boxes[i][1] * imW)))
            ymax = int(min(imH,(boxes[i][2] * imH)))
            xmax = int(min(imW,(boxes[i][3] * imW)))
            
            cv2.rectangle(image, (xmin,ymin), (xmax,ymax), (10, 255, 0), 2)

            object_name = labels[int(classes[i])] # Look up object name from "labels" array using class index
            label = '%s: %d%%' % (object_name, int(scores[i]*100)) # Example: 'person: 72%'
            labelSize, baseLine = cv2.getTextSize(label, cv2.FONT_HERSHEY_SIMPLEX, 0.7, 2) # Get font size
            label_ymin = max(ymin, labelSize[1] + 10) # Make sure not to draw label too close to top of window
            cv2.rectangle(image, (xmin, label_ymin-labelSize[1]-10), (xmin+labelSize[0], label_ymin+baseLine-10), (255, 255, 255), cv2.FILLED) # Draw white box to put label text in 
            cv2.putText(image, label, (xmin, label_ymin-7), cv2.FONT_HERSHEY_SIMPLEX, 0.7, (0, 0, 0), 2) 

    cv2.imshow('Object detector', image)

    if cv2.waitKey(0) == ord('q'):
        break

cv2.destroyAllWindows()
rhfm7lfc

rhfm7lfc1#

基本上你要做的就是做一个dict,其中键是类,值是颜色,格式和这里一样。
cv2.rectangle(image, (xmin,ymin), (xmax,ymax), (10, 255, 0), 2)
(10, 255, 0)替换为类似color_dict[classes[i]]的内容,然后您将能够为每个类获得不同的颜色。

u91tlkcl

u91tlkcl2#

另一种方法是确定性地将对象ID或对象类乘以几个不同的数字,然后使用取模运算符来确保8位图像的值不大于256。(如果使用浮点图像,也可以将它们归一化为[0-1])。当您有许多类或许多唯一ID时,这种方法很有用。

def get_color(number):
    """ Converts an integer number to a color """
    # change these however you want to
    blue = number*30 % 256
    green = number*103 % 256
    red = number*50 % 256

我发现,使用较大的数字来缩放输入,对于间距较小的数字,会产生视觉上更明显的颜色。您也可以使用HSV颜色空间来生成颜色。您可以使用colorsys在颜色空间之间进行转换。

import colorsys    

def get_color(number):
    """ Converts an integer number to a color """
    # change these however you want to
    hue = number*30 % 180
    saturation = number*103 % 256
    value = number*50 % 256

    # expects normalized values
    color = colorsys.hsv_to_rgb(hue/179, saturation/255, value/255)

    return [int(c*255) for c in color]

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