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同步操作将从 liliya/keras-image-segmentation 强制同步,此操作会覆盖自 Fork 仓库以来所做的任何修改,且无法恢复!!!
确定后同步将在后台操作,完成时将刷新页面,请耐心等待。
from __future__ import print_function
from keras.callbacks import Callback
import cv2
import numpy as np
import os
class TrainCheck(Callback):
def __init__(self, output_path, model_name):
self.epoch = 0
self.output_path = output_path
self.model_name = model_name
def result_map_to_img(self, res_map):
img = np.zeros((256, 512, 3), dtype=np.uint8)
res_map = np.squeeze(res_map)
argmax_idx = np.argmax(res_map, axis=2)
# For np.where calculation.
person = (argmax_idx == 1)
car = (argmax_idx == 2)
road = (argmax_idx == 3)
img[:, :, 0] = np.where(person, 255, 0)
img[:, :, 1] = np.where(car, 255, 0)
img[:, :, 2] = np.where(road, 255, 0)
return img
def on_epoch_end(self, epoch, logs={}):
self.epoch = epoch+1
self.visualize('img/test.png')
def visualize(self, path):
img = cv2.imread(path)
img = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
img = np.expand_dims(img, 0)
img = img / 127.5 - 1
pred = self.model.predict(img)
res_img = self.result_map_to_img(pred[0])
cv2.imwrite(os.path.join(self.output_path, self.model_name + '_epoch_' + str(self.epoch) + '.png'), res_img)
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