openpose/examples/tutorial_api_python/08_heatmaps_from_image.py

# From Python
# It requires OpenCV installed for Python
import sys
import cv2
import os
from sys import platform
import argparse

try:
 # Import Openpose (Windows/Ubuntu/OSX)
 dir_path = os.path.dirname(os.path.realpath(__file__))
 try:
 # Windows Import
 if platform == "win32":
 # Change these variables to point to the correct folder (Release/x64 etc.)
 sys.path.append(dir_path + '/../../python/openpose/Release');
 os.environ['PATH'] = os.environ['PATH'] + ';' + dir_path + '/../../x64/Release;' + dir_path + '/../../bin;'
 import pyopenpose as op
 else:
 # Change these variables to point to the correct folder (Release/x64 etc.)
 sys.path.append('../../python');
 # If you run `make install` (default path is `/usr/local/python` for Ubuntu), you can also access the OpenPose/python module from there. This will install OpenPose and the python library at your desired installation path. Ensure that this is in your python path in order to use it.
 # sys.path.append('/usr/local/python')
 from openpose import pyopenpose as op
 except ImportError as e:
 print('Error: OpenPose library could not be found. Did you enable `BUILD_PYTHON` in CMake and have this Python script in the right folder?')
 raise e

 # Flags
 parser = argparse.ArgumentParser()
 parser.add_argument("--image_path", default="../../../examples/media/COCO_val2014_000000000192.jpg", help="Process an image. Read all standard formats (jpg, png, bmp, etc.).")
 args = parser.parse_known_args()

 # Custom Params (refer to include/openpose/flags.hpp for more parameters)
 params = dict()
 params["model_folder"] = "../../../models/"
 params["heatmaps_add_parts"] = True
 params["heatmaps_add_bkg"] = True
 params["heatmaps_add_PAFs"] = True
 params["heatmaps_scale"] = 2

 # Add others in path?
 for i in range(0, len(args[1])):
 curr_item = args[1][i]
 if i != len(args[1])-1: next_item = args[1][i+1]
 else: next_item = "1"
 if "--" in curr_item and "--" in next_item:
 key = curr_item.replace('-','')
 if key not in params: params[key] = "1"
 elif "--" in curr_item and "--" not in next_item:
 key = curr_item.replace('-','')
 if key not in params: params[key] = next_item

 # Construct it from system arguments
 # op.init_argv(args[1])
 # oppython = op.OpenposePython()

 # Starting OpenPose
 opWrapper = op.WrapperPython()
 opWrapper.configure(params)
 opWrapper.start()

 # Process Image
 datum = op.Datum()
 imageToProcess = cv2.imread(args[0].image_path)
 datum.cvInputData = imageToProcess
 opWrapper.emplaceAndPop(op.VectorDatum([datum]))

 # Process outputs
 outputImageF = (datum.inputNetData[0].copy())[0,:,:,:] + 0.5
 outputImageF = cv2.merge([outputImageF[0,:,:], outputImageF[1,:,:], outputImageF[2,:,:]])
 outputImageF = (outputImageF*255.).astype(dtype='uint8')
 heatmaps = datum.poseHeatMaps.copy()
 heatmaps = (heatmaps).astype(dtype='uint8')

 # Display Image
 counter = 0
 while 1:
 num_maps = heatmaps.shape[0]
 heatmap = heatmaps[counter, :, :].copy()
 heatmap = cv2.applyColorMap(heatmap, cv2.COLORMAP_JET)
 combined = cv2.addWeighted(outputImageF, 0.5, heatmap, 0.5, 0)
 cv2.imshow("OpenPose 1.7.0 - Tutorial Python API", combined)
 key = cv2.waitKey(-1)
 if key == 27:
 break
 counter += 1
 counter = counter % num_maps
except Exception as e:
 print(e)
 sys.exit(-1)