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focal length

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Roz K
2025-09-21 04:06:34 +02:00
parent d74f3dfe67
commit f5b429217c
2 changed files with 8 additions and 23 deletions
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4
gopro_8:7/unfish_gopro_8:7.glsl
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@ -33,8 +33,8 @@ uniform float pts;
// parameters // parameters
const vec2 sensor_size = vec2(5.949440, 5.205760); const vec2 sensor_size = vec2(5.949440, 5.205760);
const float equidistant_focal_length = 3.020000; const float equidistant_focal_length = 2.970000;
const float rectilinear_focal_length = 2.232346; const float rectilinear_focal_length = 2.167601;
// constants // constants
const int subsampling = 4; const int subsampling = 4;

27
gopro_8:7/unfish_gopro_8:7.py
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@ -20,39 +20,25 @@ print("\n--- physical sensor ---\n")
# https://www.sony-semicon.com/files/62/pdf/p-13_IMX677-AAPH5-J_Flyer.pdf # https://www.sony-semicon.com/files/62/pdf/p-13_IMX677-AAPH5-J_Flyer.pdf
sensor_array_horizontal = 5700 # p
sensor_array_vertical = 5160 # p
sensor_array_diagonal = math.hypot(sensor_array_horizontal, sensor_array_vertical)
sensor_pixel_size = 1.12 * 0.001 # mm sensor_pixel_size = 1.12 * 0.001 # mm
sensor_size_horizontal = sensor_array_horizontal * sensor_pixel_size
sensor_size_vertical = sensor_array_vertical * sensor_pixel_size
sensor_size_diagonal = math.hypot(sensor_size_horizontal, sensor_size_vertical)
print("sensor size : horizontal = %7.3f, vertical = %7.3f, diagonal = %7.3f (mm)" % (
sensor_size_horizontal,
sensor_size_vertical,
sensor_size_diagonal))
# https://community.gopro.com/s/article/HERO11-Black-Video-Settings-And-Resolutions # https://community.gopro.com/s/article/HERO11-Black-Video-Settings-And-Resolutions
gopro_array_horizontal = 5312 # p gopro_array_horizontal = 5312 # p
gopro_array_vertical = 4648 # p gopro_array_vertical = 4648 # p
gopro_array_diagonal = math.hypot(gopro_array_horizontal, gopro_array_vertical)
gopro_size_horizontal = (gopro_array_horizontal / sensor_array_horizontal) * sensor_size_horizontal gopro_size_horizontal = gopro_array_horizontal * sensor_pixel_size
gopro_size_vertical = (gopro_array_vertical / sensor_array_vertical) * sensor_size_vertical gopro_size_vertical = gopro_array_vertical * sensor_pixel_size
gopro_size_diagonal = (gopro_array_diagonal / sensor_array_diagonal) * sensor_size_diagonal gopro_size_diagonal = math.hypot(gopro_size_horizontal, gopro_size_vertical)
print("gopro size : horizontal = %7.3f, vertical = %7.3f, diagonal = %7.3f (mm)" % ( print("gopro size : horizontal = %7.3f, vertical = %7.3f, diagonal = %7.3f (mm)" % (
gopro_size_horizontal, gopro_size_horizontal,
gopro_size_vertical, gopro_size_vertical,
gopro_size_diagonal)) gopro_size_diagonal))
# https://thinglabs.io/gopro-focal-radius-guide # https://thinglabs.io/gopro-focal-length-guide
gopro_focal_length = 3.02 # mm gopro_focal_length = 2.97 # mm
gopro_radius_horizontal = gopro_size_horizontal * 0.5 gopro_radius_horizontal = gopro_size_horizontal * 0.5
gopro_radius_vertical = gopro_size_vertical * 0.5 gopro_radius_vertical = gopro_size_vertical * 0.5
@ -101,8 +87,7 @@ print("\n--- shader parameters ---\n")
print("""// parameters print("""// parameters
const vec2 sensor_size = vec2(%.6f, %.6f); const vec2 sensor_size = vec2(%.6f, %.6f);
const float equidistant_focal_length = %.6f; const float equidistant_focal_length = %.6f;
const float rectilinear_focal_length = %.6f; const float rectilinear_focal_length = %.6f;""" % (
""" % (
gopro_size_horizontal, gopro_size_vertical, gopro_size_horizontal, gopro_size_vertical,
gopro_focal_length, gopro_focal_length,
rectilinear_focal_length_vertical) rectilinear_focal_length_vertical)