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| import cv2 | |
| import json | |
| import math | |
| import matplotlib | |
| import matplotlib.pyplot as plt | |
| import numpy as np | |
| import time | |
| import torch | |
| from scipy.ndimage.filters import gaussian_filter | |
| from skimage.measure import label | |
| from . import util | |
| from .model import handpose_model | |
| class Hand(object): | |
| def __init__(self, model_path): | |
| self.model = handpose_model() | |
| if torch.cuda.is_available(): | |
| self.model = self.model.cuda() | |
| print('cuda') | |
| model_dict = util.transfer(self.model, torch.load(model_path)) | |
| self.model.load_state_dict(model_dict) | |
| self.model.eval() | |
| def __call__(self, oriImg): | |
| scale_search = [0.5, 1.0, 1.5, 2.0] | |
| # scale_search = [0.5] | |
| boxsize = 368 | |
| stride = 8 | |
| padValue = 128 | |
| thre = 0.05 | |
| multiplier = [x * boxsize / oriImg.shape[0] for x in scale_search] | |
| heatmap_avg = np.zeros((oriImg.shape[0], oriImg.shape[1], 22)) | |
| # paf_avg = np.zeros((oriImg.shape[0], oriImg.shape[1], 38)) | |
| for m in range(len(multiplier)): | |
| scale = multiplier[m] | |
| imageToTest = cv2.resize(oriImg, (0, 0), fx=scale, fy=scale, interpolation=cv2.INTER_CUBIC) | |
| imageToTest_padded, pad = util.padRightDownCorner(imageToTest, stride, padValue) | |
| im = np.transpose(np.float32(imageToTest_padded[:, :, :, np.newaxis]), (3, 2, 0, 1)) / 256 - 0.5 | |
| im = np.ascontiguousarray(im) | |
| data = torch.from_numpy(im).float() | |
| if torch.cuda.is_available(): | |
| data = data.cuda() | |
| # data = data.permute([2, 0, 1]).unsqueeze(0).float() | |
| with torch.no_grad(): | |
| output = self.model(data).cpu().numpy() | |
| # output = self.model(data).numpy()q | |
| # extract outputs, resize, and remove padding | |
| heatmap = np.transpose(np.squeeze(output), (1, 2, 0)) # output 1 is heatmaps | |
| heatmap = cv2.resize(heatmap, (0, 0), fx=stride, fy=stride, interpolation=cv2.INTER_CUBIC) | |
| heatmap = heatmap[:imageToTest_padded.shape[0] - pad[2], :imageToTest_padded.shape[1] - pad[3], :] | |
| heatmap = cv2.resize(heatmap, (oriImg.shape[1], oriImg.shape[0]), interpolation=cv2.INTER_CUBIC) | |
| heatmap_avg += heatmap / len(multiplier) | |
| all_peaks = [] | |
| for part in range(21): | |
| map_ori = heatmap_avg[:, :, part] | |
| one_heatmap = gaussian_filter(map_ori, sigma=3) | |
| binary = np.ascontiguousarray(one_heatmap > thre, dtype=np.uint8) | |
| # 全部小于阈值 | |
| if np.sum(binary) == 0: | |
| all_peaks.append([0, 0]) | |
| continue | |
| label_img, label_numbers = label(binary, return_num=True, connectivity=binary.ndim) | |
| max_index = np.argmax([np.sum(map_ori[label_img == i]) for i in range(1, label_numbers + 1)]) + 1 | |
| label_img[label_img != max_index] = 0 | |
| map_ori[label_img == 0] = 0 | |
| y, x = util.npmax(map_ori) | |
| all_peaks.append([x, y]) | |
| return np.array(all_peaks) | |