Wednesday, March 23, 2011
Tuesday, March 15, 2011
Graphics tablet
A graphics tablet is a computer input device that allows one to hand-draw images and graphics, similar to the way one draws images with a pencil and paper. These tablets may also be used to capture data or handwritten signatures. It can also be used to trace an image from a piece of paper which is taped or otherwise secured to the surface. Capturing data in this way, either by tracing or entering the corners of linear poly-lines or shapes is called digitizing.
A graphics tablet consists of a flat surface upon which the user may draw or trace an image using an attached stylus, a pen-like drawing tool. The image generally does not appear on the tablet itself but, it is displayed on the computer screen. Some tablets, however, come as a functioning secondary computer screen that you can interact with image directly using the stylus.
Wireless tablet: intuos4:
This tablet lets you create graphics by drawing by the use of the pen on to the tablet and that appears on your computer screen, it also ahs wirelesstechnology and the tablet allows you tcreate digital artworks like:
5080 lines per inch of resolution in the tablet translates into smooth, detailed lines on your screen
2048 pressure levels the pressure level means it provides greater stability in controlling pressure-dependent variables on artist brushes (brush size, opacity, etc.).
Intuos4 Small (PTK-440): $378
Intuos4 Medium (PTK-640): $528
Intuos4 Large (PTK-840): $728
Intuos4 X-Large (PTK-1240): $1,148
A graphics tablet consists of a flat surface upon which the user may draw or trace an image using an attached stylus, a pen-like drawing tool. The image generally does not appear on the tablet itself but, it is displayed on the computer screen. Some tablets, however, come as a functioning secondary computer screen that you can interact with image directly using the stylus.
Wireless tablet: intuos4:
This tablet lets you create graphics by drawing by the use of the pen on to the tablet and that appears on your computer screen, it also ahs wirelesstechnology and the tablet allows you tcreate digital artworks like:
5080 lines per inch of resolution in the tablet translates into smooth, detailed lines on your screen
2048 pressure levels the pressure level means it provides greater stability in controlling pressure-dependent variables on artist brushes (brush size, opacity, etc.).
Intuos4 Small (PTK-440): $378
Intuos4 Medium (PTK-640): $528
Intuos4 Large (PTK-840): $728
Intuos4 X-Large (PTK-1240): $1,148
Sunday, March 13, 2011
Friday, March 11, 2011
olympic rings
I used paint to make these Olympic rings it was hard because they was the interlock was very challenging but I used another square of the exact same colour of the ring interlocking to cover some parts.
Wednesday, March 9, 2011
Digital art....... real art
Digital art is a real form of art, because art is a form of creativity and imagination of the artist and can be expressed in any form this can be either the artist using traditional methods or can also be done in the form of digital art so this makes digital art a valid form of art.
Digital art has advantages over traditional methods because digital art has the advantage of functions such as undo button etc. Digital art is better because it allows people who are filled with creativity and imagination but lack skill and technique in traditional methods of art to express themselves thought the use of art. Digital also allows the artist to create moving artworks such as animated gifs.
A digital artist must posses the skill of computers and knowledge on the functions of the digital media they are using like which tool performs what function e.g the pencil tool allows you to draw free hand etc. A digital artist must also be skilled in the knowledge of graphics and graphic terms in order to create a great digital artwork. The artist also must know what file extension to select to give the best result to their artwork.
Digital art has advantages over traditional methods because digital art has the advantage of functions such as undo button etc. Digital art is better because it allows people who are filled with creativity and imagination but lack skill and technique in traditional methods of art to express themselves thought the use of art. Digital also allows the artist to create moving artworks such as animated gifs.
A digital artist must posses the skill of computers and knowledge on the functions of the digital media they are using like which tool performs what function e.g the pencil tool allows you to draw free hand etc. A digital artist must also be skilled in the knowledge of graphics and graphic terms in order to create a great digital artwork. The artist also must know what file extension to select to give the best result to their artwork.
Monday, March 7, 2011
Digital media
Forms of digital media that surround us:
What is a bit what is byte?
Bit: Short for binary digit, the smallest unit of information on a machine, Computers are sometimes classified by the number of bits they can process at one time
Byte:Abbreviation for binary term, a unit of storage capable of holding a single character. On almost all modern computers, a byte is equal to 8 bits.
What is sampling rate? find an image on how sampling works.
The number of times per second that a sound wave is measured. A higher sampling rate provides superior sound quality.
How does colour depth or bit depth affect the appearance of an image? Find some images to illustrate the effect?
colour depth or bit depth is the number of bits used to show the colour of a single pixel in a bitmapped image or video, the higher the colour depth(or bit depth) the better quality of the as it gives a broader range of distinct colours.
As sampling rate is the number of times per second that a sound wave is measured and still images don't require a sampling rate as they don't have sound hence a sound wave is not needed but colour depth effects both because there are still moving images seen so colour depth effects both.
- Mobile phones (Cellular phones)
- Compact discs
- Digital Video
- Televisions
- e-books
- Internet
- Video games
- e-commerce
- Game consoles
- Computers
- Interactive media
What is a bit what is byte?
Bit: Short for binary digit, the smallest unit of information on a machine, Computers are sometimes classified by the number of bits they can process at one time
Byte:Abbreviation for binary term, a unit of storage capable of holding a single character. On almost all modern computers, a byte is equal to 8 bits.
What is sampling rate? find an image on how sampling works.
The number of times per second that a sound wave is measured. A higher sampling rate provides superior sound quality.
How does colour depth or bit depth affect the appearance of an image? Find some images to illustrate the effect?
colour depth or bit depth is the number of bits used to show the colour of a single pixel in a bitmapped image or video, the higher the colour depth(or bit depth) the better quality of the as it gives a broader range of distinct colours.
Colour depth effects both still and video digital media. Sampling rate only effects video but not still media. Can you explain?As sampling rate is the number of times per second that a sound wave is measured and still images don't require a sampling rate as they don't have sound hence a sound wave is not needed but colour depth effects both because there are still moving images seen so colour depth effects both.
Wednesday, March 2, 2011
Image file types
1. You need to find information of the following terms
GIF files: "Graphics Interchange Format", a type of image file (extension .gif) supporting animation. The colour depth is 256 colours. It is used for many animations.
Jpeg files: Joint Photographic Expert Group a compression algorithm for reducing the size of image files. JPEGs are very helpful in allowing access to full-screen image files on-line because they require less storage and therefore are quicker to download into a web page.
Mpeg files: Moving Picture Experts Group: is the name of family of standards used for coding audio-visual information in a digital compressed format. They are used for movies, video, music
Shockwave files: a file format for multimedia, vector graphics and ActionScript in the Adobe Flash environment. SWF files can contain animations. At the moment SWF functions as the dominant format for displaying "animated" vector graphics on the Web. It may also be used for programs, commonly browser games, using ActionScript.
2. What is a vector based image and how is it different to a bitmap image?
Vector based images generally contain well-defined elements such as curves and shapes of various colors. These elements can either be pure graphics, western alphabets or Asian characters. Each element is defined mathematically by the computer. For example, if a vector-based image contains a red dot, then information such as the location of the circle's center point, the length of its radius, and the color, red, would be the essential information for this image file. File names for vector-based images usually consist of extensions such as *.EPS, *.AI, *CDR, or *.DWG.
Vector-based files are more suitable for illustrations that require precise measurements. They are also easily scalable due to their mathematical nature. However, the vector-based file format has its drawbacks as well. It is not good for displaying photo-realistic images such as a photograph because images of this type generally do not contain well-defined shapes and curves.
Bitmap-based images, on the other hand, do not rely on mathematical formulas to define their various elements. Each bitmap-based image is mapped into a grid. The size of the grid is based on the image's resolution. For example, a bitmap-based image of 1 inch x 1 inch with a 600 dpi resolution would be defined by a grid of 600 x 600 pixels. Hence, a bitmap-based image is like a mosaic of pixels with each pixel holding a specific color value. File names for bitmap-based images usually consist of extensions such as *.PSD, *.JPG, *GIF, *.TIF, or *.BMP.
Bitmap-based files are more suitable for photo-realistic images that require complex color variations. They are, however, not easily scalable because each bitmap-based image is mapped to a non-flexible grid. If a bitmap-based image were to be enlarged, it would lose its sharpness. All edges within the image would appear to be jagged.
In general, bitmap-based files require more computer memory for file storage than vector-based files. The former contains all information for every single pixel of the image while the latter contains only the defining mathematical formulas for each element within the image
GIF files: "Graphics Interchange Format", a type of image file (extension .gif) supporting animation. The colour depth is 256 colours. It is used for many animations.
Jpeg files: Joint Photographic Expert Group a compression algorithm for reducing the size of image files. JPEGs are very helpful in allowing access to full-screen image files on-line because they require less storage and therefore are quicker to download into a web page.
Mpeg files: Moving Picture Experts Group: is the name of family of standards used for coding audio-visual information in a digital compressed format. They are used for movies, video, music
Shockwave files: a file format for multimedia, vector graphics and ActionScript in the Adobe Flash environment. SWF files can contain animations. At the moment SWF functions as the dominant format for displaying "animated" vector graphics on the Web. It may also be used for programs, commonly browser games, using ActionScript.
2. What is a vector based image and how is it different to a bitmap image?
Vector based images generally contain well-defined elements such as curves and shapes of various colors. These elements can either be pure graphics, western alphabets or Asian characters. Each element is defined mathematically by the computer. For example, if a vector-based image contains a red dot, then information such as the location of the circle's center point, the length of its radius, and the color, red, would be the essential information for this image file. File names for vector-based images usually consist of extensions such as *.EPS, *.AI, *CDR, or *.DWG.
Vector-based files are more suitable for illustrations that require precise measurements. They are also easily scalable due to their mathematical nature. However, the vector-based file format has its drawbacks as well. It is not good for displaying photo-realistic images such as a photograph because images of this type generally do not contain well-defined shapes and curves.
Bitmap-based images, on the other hand, do not rely on mathematical formulas to define their various elements. Each bitmap-based image is mapped into a grid. The size of the grid is based on the image's resolution. For example, a bitmap-based image of 1 inch x 1 inch with a 600 dpi resolution would be defined by a grid of 600 x 600 pixels. Hence, a bitmap-based image is like a mosaic of pixels with each pixel holding a specific color value. File names for bitmap-based images usually consist of extensions such as *.PSD, *.JPG, *GIF, *.TIF, or *.BMP.
Bitmap-based files are more suitable for photo-realistic images that require complex color variations. They are, however, not easily scalable because each bitmap-based image is mapped to a non-flexible grid. If a bitmap-based image were to be enlarged, it would lose its sharpness. All edges within the image would appear to be jagged.
In general, bitmap-based files require more computer memory for file storage than vector-based files. The former contains all information for every single pixel of the image while the latter contains only the defining mathematical formulas for each element within the image
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