Sebastian Rahtz <sebastian.ra...@computing-services.oxford.ac.uk>
wrote:

I agree with Sebastian, in general it is not possible.
In limited and special cases you can try package `hypcap',
that I have written last year. But have to mark the
begin of the figure with \capstart or you can use
option `figure', but then each figure environment
has to use a \caption command, ...
It does not work with package `subfigure' and I expect
problems with similar packages.

Yours sincerely
  Heiko <oberd...@ruf.uni-freiburg.de>

%%% cut %%% hypcap.sty %%% cut %%%
% hypcap.sty
%
% Author: Heiko Oberdiek
% Copyright (c) 1999 by Heiko Oberdiek.
%
% Function: Setting the anchor for the link of \caption separatly
%           This package tries a solution of the problem with
%           hyperref that links to figures points below the
%           caption.
%
% Use:
%  * In short, if you want to fix all figure environments that
%    have all one \caption, try:
%      \usepackage[figure]{hypcap}% after \usepackage{hyperref}
%
%  * Important: Load package _AFTER_ hyperref
%
%  * \caption is divided into two parts:
%    a) If a \capstart is present, then it increments the counter
%       and sets the link anchor.
%    b) Then \caption  performs then the rest and omits the tasks,
%       that are done by \capstart.
%    Example:
%    \usepackge{hypcap} % _AFTER_ hyperref!
%    \begin{figure}
%      \capstart        
%      ...
%      \caption{...}
%    \end{figure}
%    ==> The link from \ref or \listoffigures points now to the
%        top of the figure not below.
%  
%    several \captions in a figure environment:
%    \capstart...\caption...\capstart...\caption
%
%  * In order not to specify \capstart at the begin of a
%    float environment, you can use the options:
%      figure, figure*, table, table*
%    The the correspondending environment is overloaded to
%    execute \capstart automatically. Then there must be a
%    \caption in every environment of this type.
%    For another \captions in the environment you need
%    \capstart again.
%  
%  * Because it looks poor, if the link points exactly at top of
%    the figure, there is additional space: \hypcapspace
%    the default is "0.5\baselineskip".
%    \renewcommand{\hypcapspace}{0pt} removes it
%    \renewcommand{\hypcapspace}{1pt} sets a fix value.
%
%  Please send bugreports, suggested improvements to the author:
%  Heiko Oberdiek <oberd...@ruf.uni-freiburg.de>
%
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{hypcap}[1999/02/13 v1.0 Adjusting caption anchor
(HO)]

\@ifundefined{hyper@@anchor}{%
  \PackageError{hypcap}{You have to load 'hyperref' first}%
  \endinput

\newcommand*\hc@org@caption{}
\let\hc@org@caption\caption

\newcommand*\hc@caption{%
  \@dblarg{\@caption\@captype}% second part of caption

\newif\if@capstart

\newcommand*\hypcapspace{.5\baselineskip}

\newcommand*\capstart{%
  \H@refstepcounter\@captype % first part of caption
  \hyper@makecurrent\@captype
  \vspace*{-\hypcapspace}%
  \hyper@@anchor\@currentHref\relax
  \vspace*{\hypcapspace}%
  \let\caption\hc@caption
  \@capstarttrue

\def\hc@caption{%
  \@dblarg{\hc@@caption\@captype}%

\long\def\hc@@caption#1[#2]#3{%
  \let\caption\hc@org@caption
  \@capstartfalse
  \hyper@makecurrent\@captype
  \par\addcontentsline{%
    \csname ext@#1\endcsname}{#1}{%
    \protect\numberline{%
      \csname the#1\endcsname
    }{\ignorespaces #2}%
  }%
  \begingroup
    \@parboxrestore
    \normalsize
    \@makecaption{\csname fnum@#1\endcsname}{%
      \ignorespaces#3%
    }%
    \par
  \endgroup

\def\hc@redef#1{%
  \expandafter\hc@@redef\csname hc@org#1\expandafter\endcsname
                        \csname hc@orgend#1\expandafter\endcsname
                        \expandafter{#1}%
\def\hc@@redef#1#2#3{%
  \expandafter\let\expandafter#1\csname#3\endcsname
  \expandafter\let\expandafter#2\csname end#3\endcsname
  \renewenvironment*{#3}[1][]{%
    \ifx\\##1\\%
      #1\relax
    \else
      #1[##1]%
    \fi
    \capstart
  }{%
    \if@capstart
      \PackageError{hypcap}{You have forgotten to use
\string\caption}%
    \else
    \fi
    #2%
  }

\DeclareOption{figure}{\hc@redef{\CurrentOption}}
\DeclareOption{figure*}{\hc@redef{\CurrentOption}}
\DeclareOption{table}{\hc@redef{\CurrentOption}}
\DeclareOption{table*}{\hc@redef{\CurrentOption}}
\ProcessOptions\relax
\let\hc@redef\@undefined
\let\hc@@redef\@undefined
\endinput
%%% cut %%% hypcap.sty %%% cut %%%