le represents an image
with dimensions <a href="height width n-channels">height width n-channels</a> that was cropped from
a larger image with concrete dimensions <a href="2048 2048 4">2048 2048 4</a>.  That means
that width and channels are contiguous in memory while each row
is strided.  Put another way height is non-contiguously strided by
a dimension larger that <code>(* width n-channels)</code> and thus we cannot
collapse it.</p>
<pre><code class="language-clojure">
user&gt;;;Image dimensions when you 