Just from reading your description, my (WA)guess is you're looking for something like this: 

#!/usr/bin/perl

# https://perlmonks.org/?node_id=1223702

use strict;
use warnings;

my @binimage = ( "\x00", "\x00", "\x00", "\x00", "\x00", "\x90" );

my $matrix = join "\n", map({ unpack 'B*', $_ } reverse @binimage), ''
+;

my $transform = ''; # transpose matrix
$transform .= "\n" while $matrix =~ s/^./ $transform .= $&; '' /gem;
print "$transform\n"; # debug print to validate transpose

my $output = pack 'B*', $transform =~ tr/\n//dr; # remove \n, convert 
+to bits

printf "output = %v08B\n", $output;

[download]

Outputs 

100000
000000
000000
100000
000000
000000
000000
000000

output = 10000000.00000000.00100000.00000000.00000000.00000000

[download]

In reply to Re: I've muddled my bit and byte formats. by tybalt89
in thread I've muddled my bit and byte formats. by murrayn

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.