convert360

#!/usr/bin/env python

import argparse
import numpy as np
from PIL import Image

import py360convert


# Parsing command line arguments
parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter,
                                 description='Convertion between cubemap and equirectangular or equirectangular to perspective.')
parser.add_argument('--convert', choices=['c2e', 'e2c', 'e2p'], required=True,
                    help='What convertion to apply.')
parser.add_argument('--i', required=True,
                    help='Path to input image.')
parser.add_argument('--o', required=True,
                    help='Path to output image.')
parser.add_argument('--w', required=True, type=int,
                    help='Output width for c2e or e2p. Output cube faces width for e2c.')
parser.add_argument('--h', type=int,
                    help='Output height for c2e or e2p.')
parser.add_argument('--mode', default='bilinear', choices=['bilinear', 'nearest'],
                    help='Resampling method.')
parser.add_argument('--h_fov', type=float, default=60,
                    help='Horizontal field of view for e2p.')
parser.add_argument('--v_fov', type=float, default=60,
                    help='Vertical field of view for e2p.')
parser.add_argument('--u_deg', type=float, default=0,
                    help='Horizontal viewing angle for e2p.')
parser.add_argument('--v_deg', type=float, default=0,
                    help='Vertical viewing angle for e2p.')
parser.add_argument('--in_rot_deg', type=float, default=0,
                    help='Inplane rotation for e2p.')
args = parser.parse_args()


# Read image
img = np.array(Image.open(args.i))
if len(img.shape) == 2:
    img = img[..., None]

# Convert
if args.convert == 'c2e':
    out = py360convert.c2e(img, h=args.h, w=args.w, mode=args.mode)
elif args.convert == 'e2c':
    out = py360convert.e2c(img, face_w=args.w, mode=args.mode)
elif args.convert == 'e2p':
    out = py360convert.e2p(img, fov_deg=(args.h_fov, args.v_fov), u_deg=args.u_deg, v_deg=args.v_deg,
                           out_hw=(args.h, args.w), in_rot_deg=args.in_rot_deg, mode=args.mode)
else:
    raise NotImplementedError('Unknown convertion')

# Output image
Image.fromarray(out.astype(np.uint8)).save(args.o)