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  • ReadMe
  • Video Tutorial
  • OpenMV detailed parameters
  • 10-minute quick start
  • Image processing background knowledge
  • Python background knowledge
  • OpenMV image processing method
    • Photosensitive element
    • Basic method
    • Usage Statistics
    • Draw
    • Find color blocks
    • AprilTag tracking
    • Template matching
    • Multiple template matching
    • Feature point detection
    • Distance measurement
    • Scanning code recognition
    • Simultaneous recognition of color and shape
    • Simultaneous recognition of color template matching
    • Distinguishing different faces
    • Advanced features
  • OpenMV is also a single-chip microcomputer
    • File System
    • Module usage
    • pyb various peripherals
    • String/json/regular expression
    • Serial communication
    • Serial communication down
    • wifi communication
  • Manually write a module
    • First class
    • Manually write a temperature sensor module
  • OpenMV firmware
    • Upgrade Firmware
    • Compile firmware
    • Genuine Activation
  • debug
    • Common Error Tips
    • Common Faults
    • Show time consumed
    • Optimization
  • OpenMV accessories
    • LCD
    • WIFI
    • Perforated board
    • sd card
    • long-leg female header
    • right-angle fixing board
  • common problems
  • project examples
    • car chasing balls
    • Ball-chasing gimbal
    • Line patrol car
    • Mnist digital recognition
    • Target detection Traffic sign recognition in actual road environment
    • Mask detection
    • Garbage classification
    • Tic-Tac-Toe robot
    • Motorized microscope, 0.0001mm precision
  • Routine analysis
    • 01-Basics
      • helloworld Hello, world!
      • blinky Make the LED light up!
    • 02-Board-Control board-level control
      • arduino_i2c_slave i2c slave device
      • arduino_spi_slave spi slave device
      • arduino_uart arduino serial port
      • cpufreq_scaling CPU frequency scaling
      • usb_hid use OpenMV as a mouse
      • dac_write DAC output
      • dac_write_timed DAC cycle output
      • i2c_control i2c control
      • led_control LED control
      • native_emitters native_emitters
      • overclocking overclocking
      • pin_control pin control
      • pwm_control pwm control
      • adc_read read ADC
      • adc_read_int_channel read internal ADC channel
      • rtc real time clock
      • servo_control servo control
      • spi_control spi control
      • timer_control timer
      • timer_tests timer test
      • uart_control uart control
      • usb_vcp usb virtual serial port
      • adc_read_int_channel read internal ADC channel
      • can CAN communication
      • dac_write_timed DAC cycle output
      • vsync_gpio_output VSYNC pin output
    • 03-Drawing drawing
      • arrow_drawing drawing arrows
      • circle_drawing Draw a circle
      • cross_drawing Draw a cross
      • ellipse_drawing Draw an ellipse
      • color_drawing Draw a line in the image!
      • copy2fb copies an image to the framebuffer
      • flood_fill flood fill
      • image_drawing draws an image
      • image_drawing_advanced draws an image in an image
      • image_drawing_with_custom_palette draws an image using a user-defined palette
      • keypoints_drawing Draw feature points
      • line_drawing Draw line segments
      • rectangle_drawing Draw rectangles
      • text_drawing Write
    • 04-Image-Filters Image filtering
      • adaptive_histogram_histogram_equalization Adaptive histogram equalization
      • histogram_equalization Histogram equalization
      • blur_filter Blur filter
      • kernel_filter Kernel filter
      • cartoon_filter Cartoon filter
      • color_bilateral_filter Color image bilateral filter
      • grayscale_bilateral_filter Grayscale image bilateral filter
      • color_light_removal Color image light removal
      • grayscale_light_removal Grayscale image light removal
      • advanced_frame_differencing Advanced inter-frame difference
      • basic_frame_differencing Simple inter-frame difference
      • color_binary_filter Binary filter
      • edge_filter Edge filter
      • gamma_correction Gamma correction
      • edge_detection Edge detection
      • linear_polar Linear polar coordinate mapping
      • log_polar Logarithmic polar coordinate mapping
      • erode_and_dilate erosion expansion
      • grayscale_binary_filter grayscale binarization
      • lens_correction distortion correction
      • line_filter line filter
      • mean_filter mean filter
      • mean_adaptive_threshold_filter mean adaptive threshold filter
      • median_adaptive_threshold_filter median adaptive threshold filter
      • median_filter median filter
      • midpoint_filter midpoint filter
      • midpoint_adaptive_threshold_filter midpoint adaptive threshold filter
      • mode_filter majority filter
      • mode_adaptive_threshold_filter majority adaptive threshold filter
      • negative pixel value negation
      • perspective_and_rotation_correction perspective rotation correction
      • perspective_correction perspective correction
      • rotation_correction rotation correction
      • sharpen_filter image sharpening
      • ulab ulab
      • unsharp_filter unsharpening
      • vflip_hmirror_transpose vertical and horizontal mirror transpose image
    • 05-Snapshot shooting
      • emboss_snapshot take a relief picture for you
      • snapshot save picture
      • snapshot_on_face_detection face recognition photo
      • snapshot_on_movement moving object photo
      • time_lapse_photos moving object photo
    • 06-Video-Recording video recording
      • gif record animated picture
      • gif_on_face_detection record face recognition animated picture
      • gif_on_movement record moving object animated picture
      • imageio_read read binary video
      • imageio_write write binary video
      • imageio_memory write and read video
      • mjpeg save video
      • mjpeg_on_face_detection Face recognition video
      • mjpeg_on_movement Moving object video
    • 07-Face-Detection Face detection
      • face_detection Face recognition
      • face_recognition Face resolution
      • face_tracking Face tracking
    • 08-Eye-Tracking Eye tracking
      • face_eye_detection Eye tracking
      • iris_detection Pupil recognition
    • 09-Feature-Detection Feature Detection
      • edges Fast Edge Detection
      • find_circles Identify circles
      • find_line_segments Identify line segments
      • find_lines Identify straight lines
      • find_rects Identify rectangles
      • hog HOG feature
      • keypoints Feature point detection
      • keypoints_save Feature point save
      • lbp LBP feature
      • linear_regression_fast Fast linear regression
      • linear_regression_robust Robust linear regression
      • selective_search Selective search
      • template_matching Template matching
    • 10-Color-Tracking Color tracking
      • automatic_grayscale_color_tracking Automatic grayscale tracking
      • automatic_rgb565_color_tracking Automatic color tracking
      • black_grayscale_line_following Robot line following
      • image_histogram_info Image histogram
      • image_statistics_info Image statistics
      • ir_beacon_grayscale_tracking Infrared grayscale recognition
      • ir_beacon_rgb565_tracking Infrared color recognition
      • multi_color_blob_tracking Multi-color recognition
      • multi_color_code_tracking Multi-color combination recognition
      • single_color_code_tracking Single color combination recognition
      • single_color_grayscale_blob_tracking Grayscale recognition
      • single_color_rgb565_blob_tracking Single color recognition
    • 11-LCD-Shield LCD display
      • lcd LCD display
    • 12-Thermopile-Shield Thermal imaging
      • AMG8833_camera AMG8833 camera
      • AMG8833_camera_lcd AMG8833 camera lcd
      • AMG8833_overlay AMG8833 overlay
      • AMG8833_overlay_lcd AMG8833 overlay LCD
      • MLX90621_camera MLX90621 camera
      • MLX90621_camera_lcd MLX90621 camera demo LCD
      • MLX90621_overlay MLX90621 infrared thermal imaging
      • MLX90621_overlay_lcd MLX90621 thermal imaging LCD display
      • MLX90640_camera MLX90640 camera
      • MLX90640_camera_lcd MLX90640 camera LCD
      • MLX90640_overlay MLX90640_overlay
      • MLX90640_overlay_lcd MLX90640_overlay_lcd
      • MLX90640_overlay_smoothed MLX90640_overlay smoothed
    • 13-BLE-Shield Bluetooth
      • ble Bluetooth module
    • 14-WiFi-Shield Wireless WiFi extension
      • connect WIFI connection
      • dns
      • mqtt_pub mqtt publishing
      • mqtt_sub mqtt subscription
      • fw_update upgrade WiFi firmware
      • http_client http client
      • http_client_ssl http client encryption
      • mjpeg_streamer MJPEG video stream
      • mjpeg_streamer_ap hotspot
      • mjpeg_streamer_fir wifi view thermal imaging
      • ntp get current time
      • scan search wifi list
      • static_ip static ip
      • tcp_client tcp client multi-channel
    • 15-Servo-Shield servo expansion board
      • main
      • pca9685
      • servo multi-channel servo expansion
    • 16-Codes
      • find_apriltags tag tracking
      • find_apriltags_3d_pose 3D positioning
      • find_apriltags_w_lens_zoom Tracking markers in the center of the field of view
      • find_barcodes Barcode recognition
      • find_datamatrices Rectangular code recognition
      • find_datamatrices_w_lens_zoom Identify the central rectangular code of the field of view
      • qrcodes_with_lens_corr QR code recognition
      • qrcodes_with_lens_zoom Identify the central QR code of the field of view
    • 17-Pixy-Emulation pixy emulation
      • apriltags_pixy_i2c_emulation Use pixy iic protocol to transmit apriltag
      • apriltags_pixy_spi_emulation Use pixy spi protocol to transmit apriltag
      • apriltags_pixy_uart_emulation Use pixy uart protocol to transmit apriltag
      • pixy_i2c_emulation Emulate pixy iic protocol
      • pixy_spi_emulation Emulate pixy spi protocol
      • pixy_uart_emulation Emulate pixy uart protocol
    • 18-MAVLink
      • mavlink_apriltags_landing_target The drone uses the mavlink protocol to achieve apriltag fixed-point landing
      • mavlink_opticalflow Use the mavlink protocol to achieve optical flow
    • 19-Low-Power Low power consumption
      • sensor_sleep Photosensitive element sleep
      • deep_sleep Deep sleep
      • stop_mode Stop mode
    • 20-Frame-Differencing Frame difference
      • in_memory_advanced_frame_differencing Advanced frame difference
      • in_memory_basic_frame_differencing Simple frame difference
      • in_memory_shadow_removal Shadow removal frame difference
      • in_memory_structural_similarity Structural similarity frame difference
      • on_disk_advanced_frame_differencing Requires SD card advanced frame difference
      • on_disk_basic_frame_differencing Requires SD card simple frame difference
      • on_disk_shadow_removal Requires sd card shadow removal frame difference
      • on_disk_structural_similarity Requires sd card structural similarity frame difference
    • 21-Sensor-Control Sensor control
      • sensor_auto_gain_control Automatic gain control of the sensor
      • sensor_exposure_control Manual exposure control of the sensor
      • sensor_horizontal_mirror Horizontal mirror of the sensor
      • sensor_manual_whitebal_control Manual white balance control of the sensor
      • sensor_vertical_flip Vertical flip of the sensor
      • sesnor_manual_gain_control Manual gain control of the sensor
    • 22-Optical-Flow Optical flow
      • absolute_rotation_scale Absolute rotation transformation
      • absolute_translation Absolute translation transformation
      • differential_rotation_scale Differential rotation transformation
      • differential_translation Differential translation transformation
      • image_patches_absolute_rotation_scale Absolute rotation transformation of image patches
      • image_patches_absolute_translation Absolute translation transformation of image patches
      • image_patches_differential_rotation-scale Image patch differential rotation transformation
      • image_patches_differential_translation Image patch differential translation transformation
    • 23-Motor-Shield Motor expansion board
      • motor-shield-power-driver DC motor driver
      • motor-shield-pwm Motor driver board output PWM
      • motor motor
      • stepper stepper
    • 24-External-Sensors External-Sensors
      • I2C_Lidar_Lite_V3_example_code I2C control laser radar
    • 25-Machine-Learning Machine learning
      • tf_mnist Digital recognition
      • tf_object_detection FOMO person detection
      • nn_stm32cubeai stm32_cubeai neural network
      • tf_mobilenet_search_whole_window TensorFlow_mobilenet Whole image recognition
      • tf_mobilenet_serach_just_center TensorFlow_mobilenet Image center recognition
      • tf_person_detection_search_just_center TensorFlow Image center person detection
      • tf_person_detection_search_whole_window TensorFlow Whole image person detection
      • nn_cifar10 CIFAR10 neural network routines
      • nn_cifar10_search_just_center Neural network area center recognition
      • nn_cifar10_search_whole_window Neural network whole image recognition
      • nn_haar_smile_detection Smile detection
    • 26-April-Tags AprilTag recognition
      • find_apriltags AprilTag recognition
      • find_apriltags_3d_pose Recognize AprilTag 3D position
      • find_apriltags_max_res Maximum resolution to recognize AprilTag
      • find_apriltags_w_lens_zoom Regional center to recognize AprilTag
      • find_small_apriltags Identify small AprilTag
    • 27-Lepton infrared thermal imaging
      • lepton_get_object_temp Get object temperature
      • lepton_get_object_temp_color Get object temperature color
      • lepton_get_object_temp_color_lcd Get object temperature color LCD display
      • lepton_get_object_temp_lcd Get object temperature LCD display
      • lepton_hotspot_grayscale_color_tracking Hotspot grayscale color tracking
      • lepton_hotspot_grayscale_color_tracking_lcd Hotspot grayscale color tracking LCD display
      • lepton_hotspot_rgb565_color_tracking Hotspot color color tracking
      • lepton_hotspot_rgb565_color_tracking_lcd Hotspot color color tracking LCD display
      • lepton_target_temp_hotspot_grayscale_color_tracking Target temperature hotspot grayscale tracking
      • lepton_target_temp_hotspot_rgb565_color_tracking Target temperature hotspot color tracking
    • 28-Global-Shutter Global shutter
      • high_fps high frame rate
      • triggered_mode trigger mode
    • 29-IMU-Shield IMU expansion board
      • imu_read imu read
      • imu_RT read OpenMV RT built-in accelerometer data
    • 30-Distance-Shield distance expansion board
      • distance_read read distance
    • 31-TV-Shield image transmission expansion board
      • image transmission display
    • 32-Modbus Modbus protocol
      • Modbus and AprilTag
      • Modbus rtu slave
    • 33-Light-Shield light source expansion board
      • light light source expansion board
    • 34-Remote-Control Remote-Control
      • image_transfer_jpg_as_the_remote_device_for_your_computer OpenMV as a controlled device to transmit jpg images to the computer
      • image_transfer_jpg_streaming_as_the_remote_device_for_your_computer OpenMV as a controlled device to transmit jpg streams to the computer
      • image_transfer_raw_as_the_controller_device OpenMV as the master device to transfer raw images
      • image_transfer_raw_as_the_remote_device OpenMV as the controlled device to transfer raw images
      • popular_features_as_the_controller_device OpenMV as the master device to implement common
      • popular_features_as_the_remote_device OpenMV as the controlled device to implement common functions
    • 35-Readout-Control Readout-Control
      • 100_fps_ir_led_tracking 100_fps_ir_led_tracking 100 frames IR infrared LED tracking
    • 99-Tests self-test
      • colorbar color test
      • fps frame rate test
      • selftest self-test
      • unittests unit test
  • Published with HonKit

OpenMV is also a single-chip microcomputer

File System

Module usage

Various peripherals of pyb

String introduction json/regular

Serial communication

Serial communication down

wifi communication

Various sensors

Various motors

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