Func build() {
Expr width = input.width();
Expr height = input.height();
Expr nhom = H.channels();
//Input
Func input_func("in");
input_func(x, y, c) = input(x, y, c);
//Input H
Func H_func("H");
H_func(i, j, g) = H(i, j, g);
//Warping
Func warp_input = A_warpHomography(input_func, width, height, H_func, nhom);
//Allow for arbitrary strides
input.set_stride(0, Expr());
H.set_stride(0, Expr());
warp_input.output_buffer().set_stride(0, Expr());
return warp_input;
}
