Unit 30 Padlet by Iqddes https://padlet.com/Iqddes/da6jmudfa7xj IT en-us 2016-09-22 09:26:57 UTC 2025-12-12 23:29:35 UTC hello@padlet.com What is Lossless Compression? How does it work  Iqddes https://padlet.com/Iqddes/da6jmudfa7xj/wish/125647224 Lossless compression is a class of data compression algorithms that allows the original data to be perfectly reconstructed from the compressed data.With lossless compression, every single bit of data that was originally in the file remains after the file is uncompressed. All of the information is completely restored. ]]> 2016-09-22 09:33:50 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125647224 Why do we have to compress files? aoife_w123 https://padlet.com/Iqddes/da6jmudfa7xj/wish/125647282 Compress your infrequently large data files into an archive and save your storage space.
So instead of sending an email with many attachments you can send a compressed file making the email size more reduced, and making the transmission line more reduced as well. 
Compressing the file can save your server’s bandwidth usage and when a person receives the file it will have a smaller file size making the download faster.

]]> 2016-09-22 09:34:12 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125647282 What is lossy compression? How does it work? sam_chappin https://padlet.com/Iqddes/da6jmudfa7xj/wish/125648651 Lossy compression is a compressing technique in which some amount of data is lost.
The program takes away unnecessary bits of information making the file smaller. This type of compression is used a lot for reducing the file size of bitmap pictures, which tend to be fairly bulky. �

]]> 2016-09-22 09:41:35 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125648651 Is lossless compression reversible? Explain. aoife_w123 https://padlet.com/Iqddes/da6jmudfa7xj/wish/125648690 2016-09-22 09:41:49 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125648690 What type of files would be compressed using lossless compression? Why? Iqddes https://padlet.com/Iqddes/da6jmudfa7xj/wish/125648848
  • Audio: WAV, FLAC, and ALAC (Apple Lossless Audio Codec, used by iTunes) are all lossless audio formats. MP3, MP4, and OGG are lossy audio formats.

    • ]]>     2016-09-22 09:42:31 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125648848     Give some examples of file formats that uselossless compression aoife_w123 https://padlet.com/Iqddes/da6jmudfa7xj/wish/125724968 2016-09-22 14:06:38 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125724968 Can they support transparency? aoife_w123 https://padlet.com/Iqddes/da6jmudfa7xj/wish/125726381 Vector graphics are images that are completely described using mathematical definitions. Yes i think so as they are drawn with dots that are then connected whereas bitmap is pixels that when zoomed it, the image is unable to see. With Vectors the image can been scene when zoomed in as the image is connected through dots and not pixels. However they are not realistic images, they are more likely to be cartoons than an image of the sky.]]> 2016-09-22 14:09:12 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125726381 What are vectors made from Iqddes https://padlet.com/Iqddes/da6jmudfa7xj/wish/125726675 A vector graphic is made up of points, lines and curves related to one another using mathematical formulas. From there, the illustration can be styled with outlines, color and blends to complete the graphic. Raster graphics use pixels (small dots or squares of color) to create an overall image.

    ]]>     2016-09-22 14:09:42 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125726675     What are they typically used for? -Vectors aoife_w123 https://padlet.com/Iqddes/da6jmudfa7xj/wish/125731609 Printing On Paper And Clothes
    Rasterized printing allows     taking full advantage of the printer's resolution
    Shape printing-These processes typically require vector input to work at all - in most cases you can't cut/extrude the base material without the shape definitions used in vector graphics.
    Service Providers
    -     printing on clothes
    Sign Making
    Signs come in all shapes and sizes and many of them are made using some form of vector image original.
    While the specific production processes vary, one of them includes cutting the relevant colors from vinyl.
    Embroidery
    Computer-controlled sewing machines can quickly stitch custom designs onto different kinds of clothing. This process typically requires vector input to work at all - the machine needs to be steered to stitch out the relevant shapes and that can't be done using only pixel based information.
    General Graphic Design
    Graphic design is done in many ways with many tools, but the versatility and flexibility of vector images make them a very natural canvas to use when creating different forms of graphics such as logos or drawings.
    Flash Animations
    A lot of the smooth animations and creative art you see in animated content online is done using vector images inside Flash animations.
    ]]>     2016-09-22 14:18:58 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125731609     How are vectors scaled? Iqddes https://padlet.com/Iqddes/da6jmudfa7xj/wish/125731617 2016-09-22 14:18:58 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125731617 How does their file size compare with bitmaps, explain why there is a difference? sam_chappin https://padlet.com/Iqddes/da6jmudfa7xj/wish/125732155 The file sizes of vector graphics are smaller than bitmap images, this is because vectors are stored through the details of the objects of the graphic, when compared to bitmaps they are stored based on the contents of each pixel.

    ]]>     2016-09-22 14:20:03 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125732155     Give some vector formats and explain what they are suitable for  danieljohnconnor https://padlet.com/Iqddes/da6jmudfa7xj/wish/125734425 Vector files such as AI and EPS can remain editable so you can open them back up in Illustrator and edit any text or other elements within the graphic. With images that contain text that are saved as a JPG, PNG or GIF, you would not be able to reopen and edit the text.

    ]]>     2016-09-22 14:24:44 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125734425     danieljohnconnor https://padlet.com/Iqddes/da6jmudfa7xj/wish/125734930 RAW, BMP, PNG, JPEG and GIF rmissions":[]}��[�T �]]> 2016-09-22 14:25:41 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125734930 Give some examples of file formats that use lossy compression danieljohnconnor https://padlet.com/Iqddes/da6jmudfa7xj/wish/125734939 RAW, BMP, PNG, JPEG and GIF]]> 2016-09-22 14:25:42 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125734939 Iqddes https://padlet.com/Iqddes/da6jmudfa7xj/wish/125735172


    ]]>     2016-09-22 14:26:15 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125735172     Find a diagram that shows how progressive compression can affect an image danieljohnconnor https://padlet.com/Iqddes/da6jmudfa7xj/wish/125735316 2016-09-22 14:26:37 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125735316 Iqddes https://padlet.com/Iqddes/da6jmudfa7xj/wish/125735753 2016-09-22 14:27:34 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125735753 Can they be transpaRENT aoife_w123 https://padlet.com/Iqddes/da6jmudfa7xj/wish/125740371 yes they do as they are made of pixels that when they are zoomed it ins't clear they it just associates the pixel with some form of color. When you reshape the BMP you tend to lose it focus resulting in the image becoming unclear. however... | Yes as the RGB method supports 24 bit colour however bit field compression supports a 32 bit colour.]]> 2016-09-22 14:36:56 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125740371 what are bitmaps made  Iqddes https://padlet.com/Iqddes/da6jmudfa7xj/wish/125740474 2016-09-22 14:37:08 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125740474 How well do they scale? Iqddes https://padlet.com/Iqddes/da6jmudfa7xj/wish/125741067 2016-09-22 14:38:09 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125741067 How well do they scale Iqddes https://padlet.com/Iqddes/da6jmudfa7xj/wish/125741075 Bitmap images are, for all intents and purposes, static. They are comprised of hundreds, and more often thousands, of tiny coloured ‘dots’ commonly called pixels. Each pixel has a fixed position within the makeup of the bitmap, and when these pixels are displayed together on a computer screen, they form an image. Below is small section of a bitmap which has been significantly enlarged. Each of the coloured squares represents a single pixel.  
    they dont look good when they are scaled because you can see the pixels on the screen when you zoom into an image.]]>     2016-09-22 14:38:09 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125741075     What are they typically used for? aoife_w123 https://padlet.com/Iqddes/da6jmudfa7xj/wish/125742501 BMP are regularly used to create graphical pictures that give a sense of realism to the viewer making it seem that they can understand what is going on in the picture. These will tend to be pictures that don't need much editing (enlargement) as they will become fuzzy.
    used in line art, Grayscale images, Multitonesand Full color images]]>     2016-09-22 14:41:02 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125742501     Iqddes https://padlet.com/Iqddes/da6jmudfa7xj/wish/125742816
    ]]>     2016-09-22 14:41:39 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125742816     Drawing Packages danieljohnconnor https://padlet.com/Iqddes/da6jmudfa7xj/wish/125742862 PS-£23.99 per month
    AutoCAD Student version-Free
    Rhino4.0- ]]>     2016-09-22 14:41:44 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125742862     Iqddes https://padlet.com/Iqddes/da6jmudfa7xj/wish/125744529
    ]]>     2016-09-22 14:44:51 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125744529     How does their file size compare with vectors, explain why there is a difference? - Bitmap sam_chappin https://padlet.com/Iqddes/da6jmudfa7xj/wish/125744997 The file sizes are bigger for bitmap then for vectors this is because bitmap graphics when saved are stored based on the contents of each pixel and the amount of color inside of it. However, vector images use the objects of the graphic to store the data when saved.

    ]]>     2016-09-22 14:45:54 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125744997     How does their file sizecompare with vectors, explainwhy there is a difference? sam_chappin https://padlet.com/Iqddes/da6jmudfa7xj/wish/125745042 2016-09-22 14:46:00 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125745042 How does their file size compare with vectors, explain why there is a difference? sam_chappin https://padlet.com/Iqddes/da6jmudfa7xj/wish/125745255 2016-09-22 14:46:27 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125745255 Extra info on BMP aoife_w123 https://padlet.com/Iqddes/da6jmudfa7xj/wish/125745892
  • BMP: an outdated and limited file format that is not suitable for use in prepress.
  • EPS: a flexible file format that can contain both bitmap and vector data. It is gradually being replaced by PDF.
  • GIF: mainly used for internet graphics
  • JPEG: or rather the JFIF file format, which is mainly used for internet graphics
  • PDF: versatile file format that can contain just about any type of data including complete pages,it is not yet widely used to exchange just images
  • PICT: file format that can contain both bitmap and vector data but that is mainly used on Macintosh computers and is not very suitable for prepress.
  • PSD: the native file format of Adobe Photoshop (which can also contain vector data such as clipping paths)
  • TIFF: a popular and versatile bitmap file format

    • ]]>     2016-09-22 14:47:37 UTC https://padlet.com/Iqddes/da6jmudfa7xj/wish/125745892