%function?[routgb]?=?LHimlogpolar（imageNrhoNthetaMethodCenterShape）
function?[routgb]?=?LHimlogpolar（varargin）
%IMLOGPOLAR?Compute?logarithmic?polar?transformation?of?image.
%???B?=?IMLOGPOLAR（ANRHONTHETAMETHOD）?computes?the?logarithmic
%???polar?transformation?of?image?A?generating?a?log?polar?image
%???of?size?NRHO?by?NTHETA.?METHOD?describes?the?interpolation
%???method.?METHOD?is?a?string?that?can?have?one?of?these?values:
%
%????????‘nearest‘?（default）?nearest?neighbor?interpolation
%
%????????‘bilinear‘?bilinear?interpolation
%
%????????‘bicubic‘?bicubic?interpolation
%
%???If?you?omit?the?METHOD?argument?IMLOGPOLAR?uses?the?default
%???method?of?‘nearest‘.?
%
%???B?=?IMLOGPOLAR（ANRHONTHETAMETHODCTR）?assumes?that?the?2x1
%???vector?CTR?contains?the?coordinates?of?the?origin?in?image?A.?
%???If?CTR?is?not?supplied?the?default?is?CTR?=?[（m+1）/2（n+1）/2]
%???where?A?has?n?rows?and?m?columns.
%
%???B?=?IMLOGPOLAR（ANRHONTHETAMETHODCTRSHAPE）?where?SHAPE?is?a
%???string?that?can?have?one?of?these?values:
%
%????????‘full‘?-?returns?log?polar?transformation?containing?ALL
%?????????????????pixels?from?image?A?（the?circumscribed?circle
%?????????????????centered?at?CTR）
%
%????????‘valid‘?-?returns?log?polar?transformation?containing?only
%?????????????????pixels?from?the?largest?inscribed?circle?in?image?A
%?????????????????centered?at?CTR.
%
%???If?you?omit?the?SHAPE?argument?IMLOGPOLAR?uses?the?default?shape
%???of?‘valid‘.?If?you?specify?the?shape?‘full‘?invalid?values?on?the
%???periphery?of?B?are?set?to?NaN.
%
%???Class?Support
%???-------------
%???The?input?image?can?be?of?class?uint8?or?double.?The?output
%???image?is?of?the?same?class?as?the?input?image.
%
%???Example
%???-------
%????????I?=?imread（‘ic.tif‘）;
%????????J?=?imlogpolar（I6464‘bilinear‘）;
%????????imshow（I）?figure?imshow（J）
%
%???See?also?IMCROP?IMRESIZE?IMROTATE.

%???Nathan?D.?Cahill?8-16-01?modified?from:
%???Clay?M.?Thompson?8-4-92
%???Copyright?1993-1998?The?MathWorks?Inc.?All?Rights?Reserved.
%???$Revision:?5.10?$?$Date:?1997/11/24?15:35:33?$

%?Grandfathered:
%???Without?output?arguments?IMLOGPOLAR（...）?displays?the?transformed
%???image?in?the?current?axis.?

%?Outputs:?A???????the?input?image
%???????????Nrho????the?desired?number?of?rows?of?transformed?image
%???????????Ntheta?the?desired?number?of?columns?of?transformed?image
%???????????Method?interpolation?method?（nearestbilinearbicubic）
%???????????Center?origin?of?input?image
%???????????Shape???output?size?（fullvalid）
%???????????Class???storage?class?of?A
[ImagerowscolsNrhoNthetaMethodCenterShapeClassIn]?=?LHparse_inputs（varargin{:}）;
threeD?=?（ndims（Image）==3）;?%?Determine?if?input?includes?a?3-D?array

if?threeD
???[rgb]?=?LHtransformImage（ImagerowscolsNrhoNthetaMethodCenterShape）;
???if?nargout==0?
??????imshow（rgb）;
??????return;
???elseif?nargout==1
??????if?strcmp（Class