[bugfix] lut颜色随机生成 (#48)

* lut颜色随机生成

* lut颜色随机生成

* 简化代码

* 指定最大类别数

backend/applications/interface/semantic_segmentation.py

@@ -1,30 +1,22 @@
 import os.path as osp
+from collections import Counter
 
 import cv2
 import numpy as np
 import paddlers as pdrs
+from paddlers.tasks.utils.visualize import get_color_map_list
 from skimage.io import imsave
 
 from applications.common.path_global import md5_name, generate_url
 
 
-def get_lut():
-    lut = np.zeros((256, 3), dtype=np.uint8)
-    lut[0] = [255, 0, 0]  # 红
-    lut[1] = [30, 255, 142]  # 浅绿
-    lut[2] = [60, 0, 255]  # 蓝
-    lut[3] = [255, 222, 0]  # 橙黄
-    lut[4] = [255, 0, 255]  # 粉
-    return lut
-
-
 def execute(model_path, data_path, out_dir, test_names):
     image_list = [osp.join(data_path, name) for name in test_names]
     predictor = pdrs.deploy.Predictor(model_path, use_gpu=True)
     pred = predictor.predict(image_list)
     ims = [i['label_map'] for i in pred]
-    lut = get_lut()
     temps = list()
+    lut = np.array(get_color_map_list(256))
     for idx, im in zip(range(len(image_list)), ims):
         im = lut[im]
         new_name = md5_name(test_names[idx])