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Former-commit-id: 1b34dc488f5306fcb5d20746c217255bb9ead3c5
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11
test.py
11
test.py
@ -3,7 +3,7 @@ import numpy as np
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from matplotlib import pyplot as plt
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from scipy.signal import find_peaks
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cap = cv2.VideoCapture(1) # 使用摄像头0,通常更稳定
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cap = cv2.VideoCapture(2) # 使用摄像头0,通常更稳定
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cap.set(cv2.CAP_PROP_FRAME_WIDTH, 640) # 降低分辨率提高处理速度
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cap.set(cv2.CAP_PROP_FRAME_HEIGHT, 480)
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@ -25,7 +25,7 @@ while True:
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# 直接提取饱和度通道,避免完整HSV转换
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hsv = cv2.cvtColor(frame, cv2.COLOR_BGR2HSV)
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s = hsv[:, :, 1]
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s = hsv[:, :, 0]
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s = s[s > 0] # 只保留非零饱和度值,减少噪声
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# 使用更高效的直方图计算
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hist = cv2.calcHist([s], [0], None, [256], [0, 256])
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@ -33,9 +33,9 @@ while True:
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# 峰值检测 - 找到直方图中的峰值
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peaks, properties = find_peaks(hist,
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# height=np.max(hist) * 0.1, # 峰值高度至少是最大值的10%
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distance=5, # 峰值之间的最小距离
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prominence=np.max(hist) * 0.05) # 峰值的突出度
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height=np.max(hist) * 0.5, # 峰值高度至少是最大值的10%
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distance=10, # 峰值之间的最小距离
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prominence=np.max(hist) * 0.2) # 峰值的突出度
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# 清除旧数据并绘制新直方图
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ax.clear()
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@ -43,6 +43,7 @@ while True:
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# 标注峰值
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if len(peaks) > 0:
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print(peaks)
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ax.text(0.5, 1.05, f'Found {len(peaks)} peaks')
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ax.plot(peaks, hist[peaks], 'ro', markersize=8, label=f'Peaks ({len(peaks)})')
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# 在峰值处添加文字标注
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