roz/avidemux_shaders
1
0
Fork 0
Code Pull Requests Activity

new method based on sensor dimensions and focal length

Browse Source
This commit is contained in:
Roz K
2025-09-17 05:58:41 +02:00
parent 1bbe6653d2
commit e6c417f0f6
2 changed files with 133 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

86
gopro_8:7/unfish_gopro_8:7.py Normal file
View File

@ -0,0 +1,86 @@
# RozK
import math
print("\n--- sensor size (millimeters) ---\n")
# https://www.sony-semicon.com/files/62/pdf/p-13_IMX677-AAPH5-J_Flyer.pdf
sensor_total_array_width = 5700 # p
sensor_total_array_height = 5160 # p
sensor_total_array_diagonal = math.hypot(sensor_total_array_width, sensor_total_array_height)
sensor_pixel_size = 1.12 * 0.001 # mm
sensor_total_width = sensor_total_array_width * sensor_pixel_size
sensor_total_height = sensor_total_array_height * sensor_pixel_size
sensor_total_diagonal = math.hypot(sensor_total_width, sensor_total_height)
# sensor_total_diagonal = 8.35 # mm
# sensor_total_width = sensor_total_diagonal * (sensor_total_array_width / sensor_total_array_diagonal)
# sensor_total_height = sensor_total_diagonal * (sensor_total_array_height / sensor_total_array_diagonal)
print("sensor total: width = %.6f, height = %.6f, diagonal = %.6f" % (
sensor_total_width,
sensor_total_height,
sensor_total_diagonal))
sensor_active_array_width = 5599 # p
sensor_active_array_height = 4927 # p
sensor_active_array_diagonal = math.hypot(sensor_active_array_width, sensor_active_array_height)
sensor_active_width = (sensor_active_array_width / sensor_total_array_width) * sensor_total_width
sensor_active_height = (sensor_active_array_height / sensor_total_array_height) * sensor_total_height
sensor_active_diagonal = (sensor_active_array_diagonal / sensor_total_array_diagonal) * sensor_total_diagonal
print("sensor active: width = %.6f, height = %.6f, diagonal = %.6f" % (
sensor_active_width,
sensor_active_height,
sensor_active_diagonal))
# https://community.gopro.com/s/article/HERO11-Black-Video-Settings-And-Resolutions
gopro_array_width = 5312 # p
gopro_array_height = 4648 # p
gopro_array_diagonal = math.hypot(gopro_array_width, gopro_array_height)
gopro_sensor_width = (gopro_array_width / sensor_total_array_width) * sensor_total_width
gopro_sensor_height = (gopro_array_height / sensor_total_array_height) * sensor_total_height
gopro_sensor_diagonal = (gopro_array_diagonal / sensor_total_array_diagonal) * sensor_total_diagonal
print("gopro active: width = %.6f, height = %.6f, diagonal = %.6f" % (
gopro_sensor_width,
gopro_sensor_height,
gopro_sensor_diagonal))
# https://thinglabs.io/gopro-focal-length-guide
gopro_focal_length = 2.92 # mm
print("\n--- fisheye field of view (degrees) ---\n")
# https://en.wikipedia.org/wiki/Fisheye_lens
equidistant_angle = lambda length: math.degrees(length / gopro_focal_length)
gopro_fov_width = 2.0 * equidistant_angle(gopro_sensor_width * 0.5)
gopro_fov_height = 2.0 * equidistant_angle(gopro_sensor_height * 0.5)
gopro_fov_diagonal = 2.0 * equidistant_angle(gopro_sensor_diagonal * 0.5)
print("gopro fov: width = %.6f, height = %.6f, diagonal = %.6f" % (
gopro_fov_width,
gopro_fov_height,
gopro_fov_diagonal))
print("\n--- rectilinear focal length (mm) ---\n")
rectilinear_focal_length = lambda length: length * math.tan(math.radians(90.0 - equidistant_angle(length)))
rectilinear_focal_length_width = rectilinear_focal_length(gopro_sensor_width * 0.5)
rectilinear_focal_length_height = rectilinear_focal_length(gopro_sensor_height * 0.5)
rectilinear_focal_length_diagonal = rectilinear_focal_length(gopro_sensor_diagonal * 0.5)
print("rectilinear focal length: width = %.6f, height = %.6f, diagonal = %.6f" % (
rectilinear_focal_length_width,
rectilinear_focal_length_height,
rectilinear_focal_length_diagonal))