img = sensor.snapshot().rotation_corr(x_rotation = x_rotation_counter, \ y_rotation = y_rotation_counter, \ z_rotation = z_rotation_counter, \ x_translation = X_OFFSET, \ y_translation = Y_OFFSET, \ zoom = ZOOM_AMOUNT, \ fov = FOV_WINDOW, \ corners = TARGET_POINTS)

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RoW-Snapshot.rar是一个压缩包，包含了关于"redirect-on-write"（RoW）技术及其在数据快照领域应用的相关文档。RoW技术是一种用于创建数据快照的方法，它在写入新数据时，不是直接修改原始数据，而是将更改重定向到...

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SnapHandle := CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0); if SnapHandle <> INVALID_HANDLE_VALUE then begin ProcEntry.dwSize := SizeOf(ProcEntry); if Process32First(SnapHandle, ProcEntry) ...

import sensor, image, time sensor.reset() sensor.set_pixformat(sensor.RGB565) # 灰度更快 sensor.set_framesize(sensor.QQVGA) sensor.skip_frames(time = 2000) clock = time.clock() while(True): clock.tick() #lens_corr(1.8)畸变矫正 img = sensor.snapshot().lens_corr(1.8) for c in img.find_circles(threshold = 3500, x_margin = 10, y_margin = 10, r_margin = 10,r_min = 2, r_max = 100, r_step = 2): img.draw_circle(c.x(), c.y(), c.r(), color = (255, 0, 0)) print(c) clock.tick() img = sensor.snapshot() for r in img.find_rects(threshold = 10000): img.draw_rectangle(r.rect(), color = (255, 0, 0)) for p in r.corners(): img.draw_circle(p[0], p[1], 5, color = (0, 255, 0)) print(r) print("FPS %f" % clock.fps()) print("FPS %f" % clock.fps()) for l in img.find_line_segments(merge_distance = 10, max_theta_diff = 10): img.draw_line(l.line(), color = (255, 0, 0)) sum += l.theta() sum -= 180 if sum<110 and sum>1: print('三角形') num_segment=1

img = sensor.snapshot().lens_corr(1.8) # 检测圆形 for c in img.find_circles(threshold=3500, x_margin=10, y_margin=10, r_margin=10, r_min=2, r_max=100, r_step=2): img.draw_circle(c.x(), c.y(), c....

openMV用UART库将以下代码通过串口发送给arduino: import sensor import image import time sensor.reset() sensor.set_pixformat(sensor.RGB565) sensor.set_framesize(sensor.QQVGA) sensor.skip_frames(time=2000) clock = time.clock() while True: clock.tick() img = sensor.snapshot().lens_corr(1.8) #检测圆形 for c in img.find_circles(threshold=3500, x_margin=10, y_margin=10, r_margin=10, r_min=2, r_max=100, r_step=2): img.draw_circle(c.x(), c.y(), c.r(), color=(255, 0, 0)) print(c) img = sensor.snapshot() #检测矩形 for r in img.find_rects(threshold=10000): img.draw_rectangle(r.rect(), color=(255, 0, 0)) for p in r.corners(): img.draw_circle(p[0], p[1], 5, color=(0, 255, 0)) print(r) #检测三角形 sum_theta = 0 count = 0 for l in img.find_line_segments(merge_distance=10, max_theta_diff=10): img.draw_line(l.line(), color=(255, 0, 0)) sum_theta += l.theta() count += 1 avg_theta = sum_theta / count if count > 0 else 0 if 1 < avg_theta < 110: print('三角形') print("FPS %f" % clock.fps())

img = sensor.snapshot().lens_corr(1.8) # 检测圆形 for c in img.find_circles(threshold=3500, x_margin=10, y_margin=10, r_margin=10, r_min=2, r_max=100, r_step=2): img.draw_circle(c.x(), c.y(), c.r...

openmv4的代码中import sensor, image, time, math # 初始化摄像头 sensor.reset() sensor.set_pixform(sensor.RGB565) sensor.set_framesize(sensor.QVGA) sensor.set_windowing((240, 240)) # 设置窗口大小为240x240 sensor.skip_frames(time = 2000) sensor.set_auto_gain(False) # 关闭自动增益 sensor.set_auto_whitebal(False) # 关闭白平衡 # 加载Haar级联分类器 face_cascade = image.HaarCascade("frontalface", stages=25) # 定义人脸旋转角度阈值，当角度超过该阈值时，认为人脸处于侧面或背面姿态 angle_threshold = 35 while True: # 获取图像 img = sensor.snapshot() # 检测人脸 objects = img.find_features(face_cascade, threshold=0.5, scale=1.5) # 如果检测到人脸，则计算人脸姿态 if objects: # 获取人脸区域 face = objects[0].roi() # 计算人脸旋转角度 angle = face.rotation_corr() # 如果角度超过阈值，则认为人脸处于侧面或背面姿态 if abs(angle) > angle_threshold: print("Face is in side or back pose.") else: # 计算人脸姿态角度 roll, pitch, yaw = face.rotation() # 打印人脸姿态角度 print("Roll: %f, Pitch: %f, Yaw: %f" % (roll, pitch, yaw))出现 File "<stdin>", line 26, in <module> AttributeError: 'tuple' object has no attribute 'roi'

这个错误是因为变量 objects 是一个元组对象，而元组对象没有 roi 属性。根据代码，你想要获取人脸区域，可以使用 objects...face_image = img.copy(face_rect) 然后你就可以使用 face_image 来进行后续的处理了。

import sensor, image, lcd, time import KPU as kpu import gc, sys input_size = (224, 224) labels = ['数字1', '数字2', '数字3', '数字4', '数字5', '数字6', '数字7', '数字8'] anchors = [0.84, 1.22, 1.66, 2.34, 1.31, 1.75, 1.88, 2.59, 1.47, 2.09] def lcd_show_except(e): import uio err_str = uio.StringIO() sys.print_exception(e, err_str) err_str = err_str.getvalue() img = image.Image(size=input_size) img.draw_string(0, 10, err_str, scale=1, color=(255,255,255)) lcd.display(img) def main(anchors, labels = None, model_addr="/sd/m.kmodel", sensor_window=input_size, lcd_rotation=0, sensor_hmirror=False, sensor_vflip=False): sensor.reset() sensor.set_pixformat(sensor.RGB565) sensor.set_framesize(sensor.QVGA) sensor.set_windowing(sensor_window) sensor.set_hmirror(sensor_hmirror) sensor.set_vflip(sensor_vflip) sensor.run(1) lcd.init(type=1) lcd.rotation(lcd_rotation) lcd.clear(lcd.WHITE) if not labels: with open('labels.txt','r') as f: exec(f.read()) if not labels: print("no labels.txt") img = image.Image(size=(320, 240)) img.draw_string(90, 110, "no labels.txt", color=(255, 0, 0), scale=2) lcd.display(img) return 1 try: img = image.Image("startup.jpg") lcd.display(img) except Exception: img = image.Image(size=(320, 240)) img.draw_string(90, 110, "loading model...", color=(255, 255, 255), scale=2) lcd.display(img) try: task = None task = kpu.load(model_addr) kpu.init_yolo2(task, 0.5, 0.3, 5, anchors) # threshold:[0,1], nms_value: [0, 1] while(True): img = sensor.snapshot() t = time.ticks_ms() objects = kpu.run_yolo2(task, img) t = time.ticks_ms() - t if objects: for obj in objects: pos = obj.rect() img.draw_rectangle(pos) img.draw_string(pos[0], pos[1], "%s : %.2f" %(labels[obj.classid()], obj.value()), scale=2, color=(255, 0, 0)) img.draw_string(0, 200, "t:%dms" %(t), scale=2, color=(255, 0, 0)) lcd.display(img) except Exception as e: raise e finally: if not task is None: kpu.deinit(task) if name == "main": try: # main(anchors = anchors, labels=labels, model_addr=0x300000, lcd_rotation=0) main(anchors = anchors, labels=labels, model_addr="/sd/model-54796.kmodel") except Exception as e: sys.print_exception(e) lcd_show_except(e) finally: gc.collect()

这段代码是一个使用KPU模块进行目标检测的示例。它使用了一个预训练的YOLOv2模型来检测图像中的数字，并在LCD上显示检测结果。代码中的主要步骤包括： 1. 初始化摄像头和LCD显示器。 2. 加载YOLOv2模型并初始化...

可以把这段代码精简吗import sensor, image, time, lcd from pyb import UART sensor.reset() sensor.set_pixformat(sensor.RGB565) sensor.set_framesize(sensor.QQVGA) sensor.skip_frames(time = 2000) lcd.init() sensor.set_auto_gain(False) sensor.set_auto_whitebal(False) clock = time.clock() uart = UART(3, 19200, timeout_char=2000) while(True): clock.tick() img = sensor.snapshot().lens_corr(1.8) lcd.display(img) for c in img.find_circles(threshold = 3500, x_margin = 10, y_margin = 10, r_margin = 10, r_min = 2, r_max = 100, r_step = 2): area = (c.x()-c.r(), c.y()-c.r(), 2c.r(), 2c.r()) statistics = img.get_statistics(roi=area) print(statistics) if 0<statistics.l_mode()<100 and 0<statistics.a_mode()<127 and 0<statistics.b_mode()<127: img.draw_circle(c.x(), c.y(), c.r(), color = (255, 0, 0)) uart.write("find red cirl!\n") time.sleep_ms(2000) else: img.draw_rectangle(area, color = (255, 255, 255)) uart.write("nothing!\n") time.sleep_ms(2000) print("FPS %f" % clock.fps())

img = sensor.snapshot().lens_corr(1.8) lcd.display(img) for c in img.find_circles(threshold=3500, x_margin=10, y_margin=10, r_margin=10, r_min=2, r_max=100, r_step=2): area = (c.x()-c.r(), c.y()-c...

while(True): clock.tick() img = sensor.snapshot() for tag in img.find_apriltags(fx=f_x, fy=f_y, cx=c_x, cy=c_y): # 默认为TAG36H11 img.draw_rectangle(tag.rect(), color = (255, 0, 0)) img.draw_cross(tag.cx(), tag.cy(), color = (0, 255, 0)) print_args = (tag.x_translation(), tag.y_translation(), tag.z_translation(), \ degrees(tag.x_rotation()), degrees(tag.y_rotation()), degrees(tag.z_rotation())) # 位置的单位是未知的，旋转的单位是角度 print("Tx: %f, Ty %f, Tz %f, Rx %f, Ry %f, Rz %f" % print_args) print(clock.fps())解释每一行代码的意思及用法

这是一段Python代码的循环，不断执行以下步骤： 1. 使用摄像头拍摄一张照片； 2. 在照片中寻找AprilTag，并提取它们的位置、方向等信息； 3. 循环执行这些步骤，直到程序手动结束（由于while循环的条件为True，所以...

# Single Color Code Tracking Example # # This example shows off single color code tracking using the CanMV Cam. # # A color code is a blob composed of two or more colors. The example below will # only track colored objects which have both the colors below in them. import sensor, image, time, math # Color Tracking Thresholds (L Min, L Max, A Min, A Max, B Min, B Max) # The below thresholds track in general red/green things. You may wish to tune them... thresholds = [(30, 100, 15, 127, 15, 127), # generic_red_thresholds -> index is 0 so code == (1 << 0) (30, 100, -64, -8, -32, 32)] # generic_green_thresholds -> index is 1 so code == (1 << 1) # Codes are or'ed together when "merge=True" for "find_blobs". 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" must be set to merge overlapping color blobs for color codes. while(True): clock.tick() img = sensor.snapshot() for blob in img.find_blobs(thresholds, pixels_threshold=100, area_threshold=100, merge=True): if blob.code() == 3: # r/g code == (1 << 1) | (1 << 0) # 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) print(clock.fps())

这段代码是一个单色码跟踪的示例，使用了CanMV Cam进行跟踪。它会跟踪具有下列颜色的物体： 1. 红色：亮度范围在30到100之间，A通道范围在15到127之间，B通道范围在15到127之间。 2. 绿色：亮度范围在30到100之间，...

img = sensor.snapshot().rotation_corr(x_rotation = x_rotation_counter, \ y_rotation = y_rotation_counter, \ z_rotation = z_rotation_counter, \ x_translation = X_OFFSET, \ y_translation = Y_OFFSET, \ zoom = ZOOM_AMOUNT, \ fov = FOV_WINDOW, \ corners = TARGET_POINTS)

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