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v2.0, better quality, less perspective deformation #1

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roz merged 27 commits from v2.0 into main 2025-10-09 04:46:20 +02:00
Conversation 0 Commits 27 Files Changed 11 +895 -511
10 changed files with 895 additions and 511 deletions
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gopro_8:7/unfish_gopro_8:7.py
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@ -57,7 +57,7 @@ print("gopro fov : horizontal = %7.3f, vertical = %7.3f, diagonal = %7.3f (deg
gopro_fov_vertical,
gopro_fov_diagonal))
print("\n--- rectilinear re-projection, preserving vertical fov ---\n")
print("\n--- rectilinear re-projection ---\n")
rectilinear_focal_length = lambda radius: radius * math.tan(math.radians(90.0 - equidistant_angle(radius)))
@ -73,14 +73,14 @@ print("linear focal: horizontal = %7.3f, vertical = %7.3f, diagonal = %7.3f (mm)
rectilinear_radius = lambda angle, focal_length: focal_length * math.tan(math.radians(angle))
rectilinear_angle = lambda radius, focal_length: math.degrees(math.atan(radius / focal_length))
preserved_fov_horizontal = 2.0 * rectilinear_angle(gopro_radius_horizontal, rectilinear_focal_length_vertical)
preserved_fov_vertical = 2.0 * rectilinear_angle(gopro_radius_vertical, rectilinear_focal_length_vertical)
preserved_fov_diagonal = 2.0 * rectilinear_angle(gopro_radius_diagonal, rectilinear_focal_length_vertical)
rectilinear_fov_horizontal = 2.0 * rectilinear_angle(gopro_radius_horizontal, rectilinear_focal_length_vertical)
rectilinear_fov_vertical = 2.0 * rectilinear_angle(gopro_radius_vertical, rectilinear_focal_length_vertical)
rectilinear_fov_diagonal = 2.0 * rectilinear_angle(gopro_radius_diagonal, rectilinear_focal_length_vertical)
print("linear fov : horizontal = %7.3f, vertical = %7.3f, diagonal = %7.3f (deg)" % (
preserved_fov_horizontal,
preserved_fov_vertical,
preserved_fov_diagonal))
rectilinear_fov_horizontal,
rectilinear_fov_vertical,
rectilinear_fov_diagonal))
print("\n--- shader parameters ---\n")
@ -93,13 +93,14 @@ const float rectilinear_focal_length = %.6f;""" % (
rectilinear_focal_length_vertical)
)
print("\n--- filter parameters 4K ---\n")
width_scale = rectilinear_focal_length_vertical / rectilinear_focal_length_horizontal
output_height = 2160
output_width = int(round((output_height / 7.0) * 8.0 * width_scale))
print("resize: width = %d, height = %d" % (
output_width,
output_height))
# print("\n--- filter parameters 4K ---\n")
#
# width_scale = rectilinear_focal_length_vertical / rectilinear_focal_length_horizontal
#
# output_height = 2160
# output_width = int(round((output_height / gopro_array_vertical) * gopro_array_horizontal * width_scale))
#
# print("resize: width = %d, height = %d, ratio = %f" % (
# output_width,
# output_height,
# output_width / output_height))