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"""
Shell for running Fast image interpolation using a pyramid.
"""
from interpolate import interpolate
from interpolate_Mullapudi2016 import interpolate_Mullapudi2016
import halide.imageio
import numpy as np
import sys
import timeit
def main():
if len(sys.argv) < 3:
print("Usage: %s input.png output.png" % sys.argv[0])
print("e.g. %s input.png output.png 10" % sys.argv[0])
sys.exit(1)
input_path = sys.argv[1]
output_path = sys.argv[2]
timing_iterations = 10
print("Reading from %s ..." % input_path)
input_buf_u8 = halide.imageio.imread(input_path)
assert input_buf_u8.dtype == np.uint8
# Convert to float32 in range [0..1]
input_buf = input_buf_u8.astype(np.float32) / 255.0
h = input_buf.shape[1]
w = input_buf.shape[2]
output_buf = np.empty([3, h, w], dtype=input_buf.dtype)
tests = {
"Manual": interpolate,
"Mullapudi2016": interpolate_Mullapudi2016,
}
for name, fn in tests.items():
print("Running %s... " % name, end="")
t = timeit.Timer(lambda: fn(input_buf, output_buf))
avg_time_sec = t.timeit(number=timing_iterations) / timing_iterations
print("time: %fms" % (avg_time_sec * 1e3))
output_buf *= 255.0
output_buf_u8 = output_buf.astype(np.uint8)
print("Saving to %s ..." % output_path)
halide.imageio.imwrite(output_path, output_buf_u8)
print("Success!")
sys.exit(0)
if __name__ == "__main__":
main()
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