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      <title>P2 research on compression by Logan Slevin</title>
      <link>https://padlet.com/logan_slevin1/q1gue1bmtisk</link>
      <description>We did this because we had to</description>
      <language>en-us</language>
      <pubDate>2016-09-21 09:54:47 UTC</pubDate>
      <lastBuildDate>2017-03-15 10:36:42 UTC</lastBuildDate>
      <webMaster>hello@padlet.com</webMaster>
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      <item>
         <title>Is lossless compression reversible?</title>
         <author>konradpiet_3</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125333925</link>
         <description><![CDATA[<div>Lossless&nbsp; is allows the original data to be perfectly reconstructed, this is because of the class of data compression algorithms: one which generates a statistical model for the input data, and another which maps the input data to bit strings using this model in such a way that "probable" data will produce shorter output than "improbable" data.</div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 09:57:54 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125333925</guid>
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      <item>
         <title>What is lossy compression? How does it work?</title>
         <author>ryanmabr</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125333934</link>
         <description><![CDATA[<div>Lossy compression, also known as irreversible compression, uses approximate interpretations, and some partial discarding of an image to represent the same multimedia file. For example, in high compression examples images become particularly blurred as parts of the images are distorted through the discarding of image data.</div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 09:57:58 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125333934</guid>
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         <title>BITMAP - Give some bitmap formats and&amp;nbsp;explain what they are suitable&amp;nbsp;for:</title>
         <author>logan_slevin1</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125334263</link>
         <description><![CDATA[<div>Examples of Bitmap formats include: .bmp, this is the native bitmap file. .dib, .jpeg, .png, .gif, .tiff. <br>Bitmap images are made up of different colour pixels, it has a much larger file size than vector graphics. when resized, because bitmaps store each individual pixel, it generally has a massive loss of quality when resized.<br>Bitmap images look real because each pixel makes up a colour, and is the file format that a camera uses.</div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 09:59:32 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125334263</guid>
      </item>
      <item>
         <title>Is lossy compression reversible? Explain</title>
         <author>ryanmabr</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125334764</link>
         <description><![CDATA[<div>Lossy compression is not reversible, as during compression some content from the multimedia file tends to be discarded in place of a more approximate and broad interpretation of the image. For example, in a simple case during compression patterns of similarly colored pixels are recognized, so a block of nearly identical blue pixels will be merged into a single block, saying they are all one type of blue. This method is used, as in many cases the file can be cut down drastically, with not too much quality loss.</div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 10:01:57 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125334764</guid>
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      <item>
         <title>What type of files would be compressed using lossy compression? Why?</title>
         <author>ryanmabr</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125335218</link>
         <description><![CDATA[<div>Lossy compression is most commonly used on multimedia files, such as audio, images or video, especially in examples of streaming where in which the file has to be sent in rapid succession. These types of multimedia files are compressed for a variety of different reasons, one of which being that it can be sent over a network much faster in cases where the file size is much smaller.</div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 10:04:15 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125335218</guid>
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      <item>
         <title>Find a diagram that shows how lossless compression works.</title>
         <author>ryanmabr</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125335833</link>
         <description><![CDATA[<div><figure class="attachment attachment-preview" data-trix-attachment="{&quot;contentType&quot;:&quot;image&quot;,&quot;height&quot;:147,&quot;url&quot;:&quot;http://cdn.makeuseof.com/wp-content/uploads/2012/10/compression-jpg.jpg?820756&quot;,&quot;width&quot;:590}" data-trix-content-type="image"><img src="http://cdn.makeuseof.com/wp-content/uploads/2012/10/compression-jpg.jpg?820756" width="590" height="147"><figcaption class="caption"></figcaption></figure><figure class="attachment attachment-preview" data-trix-attachment="{&quot;contentType&quot;:&quot;image&quot;,&quot;height&quot;:414,&quot;url&quot;:&quot;http://ichef.bbci.co.uk/images/ic/480xn/p025vk69.jpg&quot;,&quot;width&quot;:480}" data-trix-content-type="image"><img src="http://ichef.bbci.co.uk/images/ic/480xn/p025vk69.jpg" width="480" height="414"><figcaption class="caption"></figcaption></figure></div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 10:07:15 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125335833</guid>
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      <item>
         <title>BITMAP - What are they made from?</title>
         <author>logan_slevin1</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125336013</link>
         <description><![CDATA[<div>Bitmap images are made up of individual pixels, and because each pixel is saved separately, file sizes are much larger than a vector image. <br>Also, because the pixels are saved separately, when making the image larger, the pixel just gets bigger as the image only knows that the pixel is that colour, and doesn't know how to recreate the image like a vector graphic. Which instead saves an equation to form the image rather than the use of pixels, thus when you resize the bitmap image the picture looses quality.</div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 10:08:20 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125336013</guid>
      </item>
      <item>
         <title>What type of files
would be compressed using lossless compression? Why?</title>
         <author>konradpiet_3</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125336191</link>
         <description><![CDATA[<div>Lossless can be used on any general-purpose compression algorithm (general-purpose means that they can handle all binary input) on any type of data.</div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 10:09:19 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125336191</guid>
      </item>
      <item>
         <title>VECTOR - What are they made from?</title>
         <author>logan_slevin1</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125340388</link>
         <description><![CDATA[<div>Vector graphics are made up of objects rather than each individual pixel. This dramatically decreases the file size because it only saves coordinates on how to recreate the shape, and thus can be easily be resized as it saves the shape and not the pixels, it can recreate the shape without the loss of quality.&nbsp;<br><br>Vectors are made from a list of pixels which are defined as different colors. This is one of the reasons they tend to be quite large files, and each pixel color can be edited individually.</div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 10:31:33 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125340388</guid>
      </item>
      <item>
         <title>Vector-can they be grouped?</title>
         <author>konradpiet_3</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125340400</link>
         <description><![CDATA[<div>Vectors can be grouped while keeping their relative size, relative position, fill, and stroke.</div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 10:31:36 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125340400</guid>
      </item>
      <item>
         <title>Vector - File Size</title>
         <author>ryanmabr</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125340407</link>
         <description><![CDATA[<div>Vector files tend to be large in size but smaller than bitmap images, because they tend to be grouped as objects.</div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 10:31:38 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125340407</guid>
      </item>
      <item>
         <title>Vector - Quality on enlagrment and reduction</title>
         <author>ryanmabr</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125340976</link>
         <description><![CDATA[<div>On enlargement or reduction of a vector image, they tend to loose quality quite quickly. This is down to the fact that the pixels are estimated when enlarged or reduced, which means they may not appear perfectly as they are approximations.</div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 10:33:11 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125340976</guid>
      </item>
      <item>
         <title>Vector - What are they made from?</title>
         <author>ryanmabr</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125341276</link>
         <description><![CDATA[<div>Vectors are made from a list of pixels which are defined as different colors. This is one of the reasons they tend to be quite large files, and each pixel color can be edited individually.</div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 10:34:50 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125341276</guid>
      </item>
      <item>
         <title>VECTOR - What are they suitable for?</title>
         <author>logan_slevin1</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125341658</link>
         <description><![CDATA[<div>Because vector images are made up of shapes rather than pixels this means that they are generally used for cartoons and digital graphics because they are made up of basic shapes that are usually a solid colour. whereas a photo from your camera would have to be bitmap because the photo isn't made up of shapes and there are so many different colours.</div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 10:36:52 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125341658</guid>
      </item>
      <item>
         <title>vector-do they have separate outline and fill?</title>
         <author>konradpiet_3</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125341927</link>
         <description><![CDATA[<div>Each vector has its separate outline and fill unless they have been grouped in which case they share the same outline and fill until un-grouped.</div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 10:38:26 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125341927</guid>
      </item>
      <item>
         <title>Vector - Find examples of drawing packages</title>
         <author>ryanmabr</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125342255</link>
         <description><![CDATA[<div>CorelDRAW<br>InkScape<br>SerifDraw Plus<br>Adobe Flash</div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 10:40:47 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125342255</guid>
      </item>
      <item>
         <title>Vector example</title>
         <author>konradpiet_3</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125342847</link>
         <description><![CDATA[<div><figure class="attachment attachment-preview"><img src="https://cdn.tutsplus.com/vector/uploads/2013/10/grouping-1.png" width="600" height="300"><figcaption class="caption"></figcaption></figure></div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 10:44:35 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125342847</guid>
      </item>
      <item>
         <title>VECTOR - Can they support transparency?</title>
         <author>logan_slevin1</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125342892</link>
         <description><![CDATA[<div>Yes, when there is no colour the space is transparent</div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 10:44:53 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125342892</guid>
      </item>
      <item>
         <title>Bitmap- Can they be grouped?</title>
         <author>konradpiet_3</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125344459</link>
         <description><![CDATA[<div>Individual elements cannot be grouped.</div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 10:53:10 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125344459</guid>
      </item>
      <item>
         <title>Bitmap - File Size</title>
         <author>ryanmabr</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125344755</link>
         <description><![CDATA[<div>Bitmap images tend to be one of the largest image files as pixels for a bitmap image are defined individually, and appear irrespective of any other pixel.</div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 10:54:47 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125344755</guid>
      </item>
      <item>
         <title>Bitmap- outline and fill</title>
         <author>konradpiet_3</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125345034</link>
         <description><![CDATA[<div>Each pixel has its own fill.</div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 10:56:28 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125345034</guid>
      </item>
      <item>
         <title>Bitmap - Packages</title>
         <author>ryanmabr</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125345351</link>
         <description><![CDATA[<div>Corel Painter<br>Adobe Photoshop<br>Adobe Fireworks<br>Corel Paint Shop Pro</div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 10:58:06 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125345351</guid>
      </item>
      <item>
         <title>Give some examples of file formats that use lossless compression.</title>
         <author>ryanmabr</author>
         <link>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125346083</link>
         <description><![CDATA[<div>Image: RAW, BMP, and PNG are all lossless image formats. JPEGand GIF are lossy image formats.&nbsp;<br><br>Audio: WAV, FLAC, and ALAC (Apple Lossless Audio Codec, used by iTunes) are all lossless audio formats. MP3, MP4, and OGG are lossy audio&nbsp;</div>]]></description>
         <enclosure url="" />
         <pubDate>2016-09-21 11:02:35 UTC</pubDate>
         <guid>https://padlet.com/logan_slevin1/q1gue1bmtisk/wish/125346083</guid>
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