feat（新功能）:

fix（修复bug）:  clothing seg 服务图片缺少3通道逻辑增加
docs（文档变更）:
refactor（重构）:
test(增加测试):

app/service/clothing_seg/service.py

@@ -62,6 +62,10 @@ class ClothingSeg:
             image = data["image"]
             clothing_result = []
             if image_type == "sketch":
+                if len(image.shape) == 2:
+                    image = np.stack([image] * 3, axis=-1)
+                    seg_mask = get_seg_result(1, image[:, :, :3])
+                else:
                     seg_mask = get_seg_result(1, image[:, :, :3])
                 temp = seg_mask != 0.0
                 mask = (255 * (temp + 0).astype(np.uint8))