Change some images.

<p><a name="noise_reduction"><b>Noise Reduction</b></a></p>

<p>In Noise Reduction photo mode, Open Camera takes a burst of photos which are then automatically merged, to improve photo quality.

This is particularly useful in low light scenes to reduce noise. The image below shows an example with one of the input burst photos

on the left, and the resultant merged photo on the right:

This is particularly useful in low light scenes to reduce noise.

<!--The image below shows an example with one of the input burst photos on the left, and the resultant merged photo on the right:-->

</p>

<p><a href="avg_image_test17.jpg">

<img src="avg_image_test17_thumb.jpg" style="max-width:100%" alt="Screenshots demonstrating Noise Reduction" title="Screenshots demonstrating Noise Reduction">

</a></p>

<p>Also see a <a href="avg_image_test17_zoomed.jpg">zoomed in section.</a></p>

<p>Some things to note about Open Camera's NR feature:</p>

<ul>

<li>In dark scenes, NR will also apply pixel binning, merging 4 pixels into 1 to reduce noise. Therefore in such cases , the

the rest of the scene being too dark. HDR uses an algorithm to combine the best parts of each image, and adjusts the colors so that

the full range of brightness values are captured in the scene:</p>

<p><a href="hdr_image_test8.jpg">

<img src="hdr_image_test8_thumb.jpg" style="max-width:100%" alt="Screenshots demonstrating HDR" title="Screenshots demonstrating HDR">

<p><a href="hdr_20160901_194227.jpg">

<img src="hdr_20160901_194227_thumb.jpg" style="max-width:100%" alt="Images demonstrating HDR" title="Images demonstrating HDR">

</a></p>

<p>The left set of three images show the individual exposures, the right the final HDR image. Note that on the middle picture on the

left, the sky is completely over-exposed (making a nice blue sky look like white clouds), as is the bark in the tree centre-left and

the grass. Meanwhile the tree branches in the foreground is a bit too dark.</p>

<p>The left set of three images show the individual exposures, the right the final HDR image.</p>

<p>Some things to note about Open Camera's HDR feature:</p>

<ul>