# -*- coding: utf-8 -*- 
'''
颜色特征识别测试代码
'''
import numpy as np
import cv2
from color_feature import color_block_finder,draw_color_block_rect

def test_color_block_finder_01():
    '''
    色块识别测试样例1 从图片中读取并且识别
    '''
    # 图片路径
    img_path = "demo-pic.png"
    # 颜色阈值下界(HSV) lower boudnary
    lowerb = (96, 210, 85) 
    # 颜色阈值上界(HSV) upper boundary
    upperb = (114, 255, 231)

    # 读入素材图片 BGR
    img = cv2.imread(img_path, cv2.IMREAD_COLOR)
    # 检查图片是否读取成功
    if img is None:
        print("Error: 请检查图片文件路径")
        exit(1)

    # 识别色块 获取矩形区域数组
    rects = color_block_finder(img, lowerb, upperb)
    # 绘制色块的矩形区域
    canvas = draw_color_block_rect(img, rects)
    # 在HighGUI窗口 展示最终结果
    cv2.namedWindow('result', flags=cv2.WINDOW_NORMAL | cv2.WINDOW_FREERATIO)
    cv2.imshow('result', canvas)

    # 等待任意按键按下
    cv2.waitKey(0)
    # 关闭其他窗口
    cv2.destroyAllWindows()

def test_color_block_finder_02():
    '''
    色块识别测试样例2 从视频流中读取并且识别
    '''
    # 视频路径
    video_path = 'demo-video.mkv'
    # 颜色阈值下界(HSV) lower boudnary
    lowerb = (96, 210, 85) 
    # 颜色阈值上界(HSV) upper boundary
    upperb = (114, 255, 231)

    
    # 读入视频流
    cap = cv2.VideoCapture(video_path)
    # 色块识别结果展示
    cv2.namedWindow('result', flags=cv2.WINDOW_NORMAL | cv2.WINDOW_FREERATIO)

    while(True):
        # 逐帧获取画面
        # ret ？ 画面是否获取成功
        ret, frame = cap.read()
        
        if ret:
            img = frame
            # 识别色块 获取矩形区域数组
            # 同时设定最小高度还有宽度，过滤噪声
            rects = color_block_finder(img, lowerb, upperb,min_w=10,min_h=10)
            # 绘制色块的矩形区域
            canvas = draw_color_block_rect(img, rects)
            # 在HighGUI窗口 展示最终结果 更新画面
            cv2.imshow('result', canvas)

        else:
            print("视频读取完毕或者视频路径异常")
            break

        # 这里做一下适当的延迟，每帧延时0.1s钟
        if cv2.waitKey(50) & 0xFF == ord('q'):
            break

    # 释放资源
    cap.release()
    cv2.destroyAllWindows()


if __name__ == "__main__":
    # 测试图片色块识别
    # test_color_block_finder_01()
    # 测试视频流色块识别
    test_color_block_finder_02()