2025-07-31 04:43:45 +02:00
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# RozK
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# Computes fisheye removal parameters for GoPro 11+, 4:3 ratio, Max SuperView,
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# keeping the vertical FOV and widening the frame to preserve the diagonal FOV
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# https://www.bobatkins.com/photography/technical/field_of_view.html
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# https://community.gopro.com/s/article/HERO11-Black-Mini-Digital-Lenses-FOV-Information?language=fr
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import math
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frame_width = 4
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frame_height = 3
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input_ratio = frame_width / frame_height
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input_vertical_fov = 108.0
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input_diagonal_fov = 169.0
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input_vertical_length = math.radians(input_vertical_fov * 0.5)
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input_diagonal_length = math.radians(input_diagonal_fov * 0.5)
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output_horizontal_length = math.sqrt((input_diagonal_length ** 2) / (input_vertical_length ** 2))
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output_diagonal_length = math.hypot(output_horizontal_length, input_vertical_length)
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output_diagonal_fov = math.degrees(math.atan(output_diagonal_length)) * 2.0
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2025-08-01 05:06:00 +02:00
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output_ratio = 8 / 7
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output_pixel_ratio = 1.0 / (output_horizontal_length / input_vertical_length)
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2025-07-31 04:43:45 +02:00
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print("Output FOV = %f" % output_diagonal_fov)
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2025-08-01 05:06:00 +02:00
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print("Output Ratio = %f" % output_pixel_ratio)
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2025-07-31 04:43:45 +02:00
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print("= Resolutions =====================")
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def width_rounded_8(height):
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2025-08-01 05:06:00 +02:00
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width = int(round(height * output_ratio))
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2025-07-31 04:43:45 +02:00
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return ((width + 4) // 8) * 8
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print("HD = %i x 720" % width_rounded_8(720))
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print("Full HD = %i x 1080" % width_rounded_8(1080))
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print("4K = %i x 2160" % width_rounded_8(2160))
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