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我也是，用回以前的代码就没问题了

我改过，还是不行，试过提取好几个不同的蓝色物品的阈值来试验也不行

# This work is licensed under the MIT license.
# Copyright (c) 2013-2023 OpenMV LLC. All rights reserved.
# https://github.com/openmv/openmv/blob/master/LICENSE
#
# Single Color RGB565 Blob Tracking Example
#
# This example shows off single color RGB565 tracking using the OpenMV Cam.

import sensor
import time
import math

threshold_index = 0  # 0 for red, 1 for green, 2 for blue

# Color Tracking Thresholds (L Min, L Max, A Min, A Max, B Min, B Max)
# The below thresholds track in general red/green/blue things. You may wish to tune them...
thresholds = [
    (30, 100, 15, 127, 15, 127),  # generic_red_thresholds
    (30, 100, -64, -8, -32, 32),  # generic_green_thresholds
    (16, 40, -71, 29, -98, -22),
]  # generic_blue_thresholds

sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.skip_frames(time=2000)
sensor.set_auto_gain(False)  # must be turned off for color tracking
sensor.set_auto_whitebal(False)  # must be turned off for color tracking
clock = time.clock()

# Only blobs that with more pixels than "pixel_threshold" and more area than "area_threshold" are
# returned by "find_blobs" below. Change "pixels_threshold" and "area_threshold" if you change the
# camera resolution. "merge=True" merges all overlapping blobs in the image.

while True:
    clock.tick()
    img = sensor.snapshot()
    for blob in img.find_blobs(
        [thresholds[threshold_index]],
        pixels_threshold=200,
        area_threshold=200,
        merge=True,
    ):
        # These values depend on the blob not being circular - otherwise they will be shaky.
        if blob.elongation() > 0.5:
            img.draw_edges(blob.min_corners(), color=(255, 0, 0))
            img.draw_line(blob.major_axis_line(), color=(0, 255, 0))
            img.draw_line(blob.minor_axis_line(), color=(0, 0, 255))
        # These values are stable all the time.
        img.draw_rectangle(blob.rect())
        img.draw_cross(blob.cx(), blob.cy())
        # Note - the blob rotation is unique to 0-180 only.
        img.draw_keypoints(
            [(blob.cx(), blob.cy(), int(math.degrees(blob.rotation())))], size=20
        )

就像这张图片里，零点坐标是在左上角吗？

OpenMV的GND引脚和舵机的GND引脚连接，舵机的VCC的引脚和电池正极连接，舵机的GND引脚和电池负极连接，舵机的引脚和openmv的p7和p8引脚都连接过，用万用表测过，供电正常，openmv和舵机之间也有电压传输，但是程序运行后舵机不会动

openmv IDE可以安装statistics函数库吗？

edge impulse训练的类别在20个以上，结果模型无法训练了怎么解决？

openmv4 H7 Plus可以运行opencv训练好的数据库模型和算法吗？