Adobe photoshop

Adobe Photoshop

Chair of Computer Aided Design and Geo-Informatics –Ayele Bedada

URPL2310 - Year Group I - First Semester

Lecture on Photoshop software, raster and vector images/

November 27 2011

Origins

:Thomas Knoll Glen Knoll John Knoll

Thomas Knoll, the PHD student, Glen Knoll was a college professor and John Knoll, a talented special effects whiz came up with a core idea of Photoshop between 1987 and 1988.

In February of 1990, Adobe 1.0 was released. And now Photoshop is twenty one years old.

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What is Adobe Photoshop

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Photoshop 2.0 included the Path feature, which allowed users to trim around an object easily and to save that path for future use.

Is a graphics editing program developed and published by

Adobe Systems Incorporated

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The big story for Adobe Photoshop 3.0 was layers

Adobe Photoshop is released in Adobe Photoshop, and

Adobe Photoshop Extended editions, with the Extended having extra 3D image creation, motion graphics editing, and advanced image analysis features. Adobe Photoshop Extended is included in all of Adobe's Creative Suite offerings except Design Standard, which includes the Adobe Photoshop edition.

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Adjustment layers and macros were the two most notable features of Photoshop 4.0.

Adobe only supports Windows and Macintosh versions of Photoshop, but using Wine Photoshop CS4 can run on Linux.

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The two most important features released with 5.0 were editable type and the ability to undo actions multiple times in the “History” palette.

PSD (Photoshop Document) is Photoshop's native format.

PSD format is limited to a maximum height and width of 30,000 pixels. Photoshop's primary strength is as a pixel-based image editor, unlike vector-based image editors/ Adobe Illustrator, CorelDraw, etc.

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The most important feature released with 5.0 was Save For Web.

Photoshop also enables the creation, incorporation, and manipulation of vector graphics through its Paths, Pen tools, Shape tools, Shape Layers, Type tools, Import command, and Smart object functions there by enabling us combine pixel-based and vector-based images in one Photoshop document

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The layer styles panel made working with layers even easier in Photoshop 6.Vector shapes were also added in this release. There was also a new custom shapes palette that allowed the user to draw using vector shapes rather than just using lines. Text could also now be typed directly onto a picture, rather than being typed first into a text box. Multi-layer functions made their first appearance with version 6.0. The Blending Options dialogue was also introduced 6.0 separated the crop tool from the marquee tool.

PSD file format can be exported to and from Adobe Illustrator, Adobe Premiere Pro, and After Effects

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Version 7.0 introduced the healing brush and text that was fully vector-based. It introduced a new file browser that let designers easily pore through folders to find the graphics that they wanted.Files within a folder could be renamed using Batch Rename.Workspaces could also be created and saved, allowing you to save your file locations and groups for future use.The brush palette featured a changes, including the new healing brush tool, patch tool, and the ability to create custom brushes. Spell check and a find/replace feature rounded out the updates to the text tool.A number of enhancements were also included for web use, including the addition of rollover effects for images and a web gallery feature.7.0 was optimized for use with Mac OS X, virtually eliminating crashes in the middle of working on large files.

Computer displays are made up from grids of small rectangular cells called pixels; the term comes from "picture elements". The picture is built up from these cells. The smaller and closer the cells are together, the better the quality (resolution) of the image, but the bigger the file needed to store the data.

*DPI/ Dots per pixel/ dots=pixels * resolution

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Photoshop CS was the first to employ the CDS (counterfeit deterrence system) which recognized and refused to allow duplication of paper currency.Scripting support for various web languages, including JavaScript, was also new to this release. Layer groups were introduced with this version. Improvements to the File Browser made images easier to work with, and the 16-bit and better large file support made CS much easier to work with.

Pixels

In computer graphics, a raster graphics image, or bitmap, is a data structure representing a generally rectangular grid of pixels, or points of color, viewable via a monitor, paper, or other display medium. Raster images are stored in image files with varying formats

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The layer styles panel made working with layers even easier in Photoshop 6.Vector shapes were also added in this release. There was also a new custom shapes palette that allowed the user to draw using vector shapes rather than just using lines. Text could also now be typed directly onto a picture, rather than being typed first into a text box. Multi-layer functions made their first appearance with version 6.0. The Blending Options dialogue was also introduced 6.0 separated the crop tool from the marquee tool.

Pixel Based/Raster Images

The red eye removal tool is added.Smudging options and the ability to select multiple layers also added to the functionality of Photoshop.The Vanishing Point tool allowed users to edit images in perspective.

Vector graphics is the use of geometrical primitives such as points, lines, curves, and shapes or polygon(s), which are all based on mathematical expressions, to represent images in computer graphics. "Vector", in this context, implies more than a straight line.

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Vector Based Images

A faster loading is enabled.Graphic optimization for mobile devices is also a new feature.CS3 shipped in Standard and Extended editions. Cloning became easier in CS3 with the birth of the Clone Source palette which increased the options available to the Clone Stamp tool in an easily accessible palette.

Vector Versus Raster Images

The smoother pan and zoom is enabled.The Masks and Adjustments panel was added, making working with masks easier. The user interface was significantly simplified in CS4.

Vector Versus Raster Images

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>

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> Raster graphics is constructed of pixels (picture elements)

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>

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> Vector graphics is based on images made up of vectors (also called paths, or strokes)

Vector Versus Raster Images

>

>

> Resolution dependent

> Raster graphics is constructed of pixels (picture elements)

>

>

> Resolution independent

> Vector graphics is based on images made up of vectors (also called paths, or strokes)

Vector Versus Raster Images

>

> Possible to produce continues

tone image

> Resolution dependent

> Raster graphics is constructed of pixels (picture elements)

>

> Impossible to produce continues

tone image

> Resolution independent

> Vector graphics is based on images made up of vectors (also called paths, or strokes)

Vector Versus Raster Images

> Difficult to convert raster image

to vector image

> Possible to produce continues

tone image

> Resolution dependent

> Raster graphics is constructed of pixels (picture elements)

> A vector image can easily be

rasterized

> Impossible to produce continues

tone image

> Resolution independent

> Vector graphics is based on images made up of vectors (also called paths, or strokes)

Vector Versus Raster Images

Photoshop posters on streets

Photoshop posters on streets

Photoshop posters on streets

Photoshop posters on streets

Photoshop posters on streets

Photoshop /Graphic Designers

Photoshop /Graphic Designers

Photoshop /Graphic Designers

Photoshop /Architects, Urban Planners, etc.

Photoshop /Architects, Urban Planners, etc.

Photoshop /Architects, Urban Planners, etc.

Photoshop /Architects, Urban Planners, etc.

Photoshop /Architects, Urban Planners, etc.

Photoshop /Architects, Urban Planners, etc.

Photoshop /Architects, Urban Planners, etc.

Photoshop Interface

Photoshop Interface

Photoshop Interface/the tool box

Photoshop Interface/the tool box

The tools palette lay out contain 60 separate tools.

Photoshop Interface/the option bar

Photoshop Interface/the palette icon

Photoshop/class exercise

Photoshop/class exercise

Exercise I

use the images on the left side to come up with the shown composition on the right side or work on a new composition

* students need not use these particular images

Photoshop/class exercise

Exercise II

use the individual images on the left side to come up with the composition on the right side or work on a new composition

* students need not use these particular images

Photoshop/class exercise

Exercise III

use the individual images on the left side to come up with the composition on the right side or work on a new composition

* students need not use these particular images