# MLX90621 Camera Demo
#
# This example shows off how to overlay a heatmap onto your OpenMV Cam's
# live video output from the main camera.
import image, time, fir
drawing_hint = image.BICUBIC # or image.BILINEAR or 0 (nearest neighbor)
# Initialize the thermal sensor
fir.init(type=fir.FIR_MLX90621)
w = fir.width() * 20
h = fir.height() * 20
# FPS clock
clock = time.clock()
while (True):
clock.tick()
try:
img = fir.snapshot(x_size=w,
y_size=h,
color_palette=fir.PALETTE_IRONBOW,
hint=drawing_hint,
copy_to_fb=True)
except OSError:
continue
# Print FPS.
print(clock.fps())
# Thermal Camera Demo
#
# This example shows how to use common low-res FIR sensors (like MLX or AMG).
# NOTE: Only the AMG8833 is currently enabled for NANO RP2040.
import image, time, fir
IMAGE_SCALE = 5 # Higher scaling uses more memory.
drawing_hint = image.BICUBIC # or image.BILINEAR or 0 (nearest neighbor)
# Initialize the thermal sensor
fir.init() #Auto-detects the connected sensor.
w = fir.width() * IMAGE_SCALE
h = fir.height() * IMAGE_SCALE
# FPS clock
clock = time.clock()
while (True):
clock.tick()
try:
img = fir.snapshot(x_size=w,
y_size=h,
color_palette=fir.PALETTE_IRONBOW,
hint=drawing_hint,
copy_to_fb=True)
except OSError:
continue
# Print FPS.
# MLX90640 Camera Demo
#
# This example shows off how to overlay a heatmap onto your OpenMV Cam's
# live video output from the main camera.
import image, time, fir
drawing_hint = image.BICUBIC # or image.BILINEAR or 0 (nearest neighbor)
# Initialize the thermal sensor
fir.init(type=fir.FIR_MLX90640)
w = fir.width() * 10
h = fir.height() * 10
# FPS clock
clock = time.clock()
while (True):
clock.tick()
try:
img = fir.snapshot(x_size=w,
y_size=h,
color_palette=fir.PALETTE_IRONBOW,
hint=drawing_hint,
copy_to_fb=True)
except OSError:
continue
# Print FPS.
print(clock.fps())
# The following registers fine-tune the image
# sensor window to align it with the FIR sensor.
if (sensor.get_id() == sensor.OV2640):
sensor.__write_reg(0xFF, 0x01) # switch to reg bank
sensor.__write_reg(0x17, 0x19) # set HSTART
sensor.__write_reg(0x18, 0x43) # set HSTOP
# Initialize the thermal sensor
fir.init()
# FPS clock
clock = time.clock()
# fir region of display
fir_height = int(fir.height() * sensor.width() // fir.width())
fir_yoffset = (sensor.height() // 2) - (fir_height // 2)
fir_region = [0, fir_yoffset, sensor.width(), fir_height]
fir_scale = [0, 35]
# Our fir threshold range
fir_threshold = [32, 95, -18, 40, -22, 92] # Middle L, A, B values.
fps_target = 10
fps_delay_max = 500
fps_delay = 50
fps_delay_inc = 1
dbg_row = 0
learn = False
import sensor, image, time, fir
IR_SCALE = 4
sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QQVGA)
sensor.skip_frames(time=2000)
# Initialize the thermal sensor
fir.init(type=fir.FIR_MLX90640,
refresh=16) # Hz (higher end OpenMV Cam's may be able to run faster)
# Allocate another frame buffer for smoother video.
ir_buffer = image.Image(fir.width() * IR_SCALE,
fir.height() * IR_SCALE, sensor.GRAYSCALE)
x_scale = sensor.width() / ir_buffer.width()
y_scale = sensor.height() / ir_buffer.height()
# FPS clock
clock = time.clock()
while (True):
clock.tick()
# Capture an image
img = sensor.snapshot()
# Capture FIR data
# ta: Ambient temperature