Transcript Graphics Development Adobe Photoshop

Graphics Development
Adobe Photoshop
Contents
• Needs of images and graphics, market size,
animation
• Drawing basic shapes, filling, colors
• Adjusting an existing image
• Layers, Channels and Paths
• Animated GIFs
• Patterns – Defining and Using
• Panoramas
• Publishing
Introduction
• A Picture is worth of thousand words – An
Old Proverb
• Things can be explained easily when
available as an image
• Photoshop helps us in creating new
images, adjusting an existing image,
creating special effects or animation of an
image and more
Graphics Usage
• Images can be used for
– Presentation
• To explain business/product objective etc
– Publishing
• To print beautiful images in posters or invitation or
business cards etc
– Education
• To teach people
Tools Available
• Selection Tool / Marquee Tool
– Used for selecting portions of an image
– Rectangular, Elliptical, Horizontal and Vertical
• Text Tool
– Used for adding text in an image
– Horizontal and Vertical aligned text
• Notes Tool
– For adding description or comment to an image
– Text annotation and Audio annotation
• Eraser Tool
– To erase the selected portions
– Simple, Background and Magic
Tools contd...
• Lasso – For Selection purpose
– Simple Lasso, Polygonal Lasso and Magnetic
Lasso
• Magic wand – For selection purpose
• Crop – To cut few portions of an image
• Slice/Slice Selection – To cut image into
several slices
• Move – To move layers of an image from
one position to other
Tools contd..
• Brushes
– These are used for filling a selected area with
colors
– History brush, Art History brush
– Healing brush (for filling the selected area
with patches / portions from the same image
or another image)
– Patch brush – for filling selected areas with a
defined pattern
Tools
• Stamp tools – For stamping a pattern on
an image
– Clone Stamp – Clones a portion of an image
– Pattern Stamp – Imprints the selected pattern
on the image
• Background and Foreground colors – The
two interleaved squares on the tool box
sets the foreground (front square) and
background (rear square) colors.
Tools
• Blur – To make the surface of the image to look
very hazy
• Sharpen – Sharpens the image appearance
• Smudge – Mixes up the colors present in the
adjacent areas
• Sponge – Wipes the extra colors and make the
image look neat
• Burn – Darkens the image
• Dodge – Brightens the image
Tools
• Paint Bucket – Used for filling an area with
the foreground color
• Gradient Bucket – Used for filling an area
with gradient color (mixed color or pattern)
• Drawing tools – We can draw rectangle,
rounded rectangle, circle, polygon or any
other available patterns on our image
using the drawing tools
Adjusting Image
• Click on Image -> Adjustment
• It has options
– Brightness/Contrast to adjust brightness and
contrast
– Invert to make dark portions light and light
portions dark
– Posterize – For distorting the image. Lesser
the value more the distortion
– Curves – Automatically adjusting the contrast
and brightness
Patterns
• To define a pattern
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Open a 5 X 5 document
Zoom to maximum size
Select a pencil tool with an appropriate brush size
Draw lines (horizontal or vertical or both)
Go to Edit Menu and select Define Pattern
Give a name for the pattern and click OK
• To fill a pattern
– Go to Edit Menu
– Select Fill
– Choose Pattern from the dropdown list and select the
pattern from the list
Noise and distortions
• Adding noise or distortions to the image
modifies the appearance of the image
• Go to Filter Menu and click Noise and then
select Add Noise. Give the noise level.
Higher the level more is the disturbances
caused
• We can also select Distortions under the
same Filter Menu and can choose the type
like Ocean waves, ripple etc.
Color Range
• Photoshop allows us to select a range of
color in an image
• Open an image
• Click on Select -> Color Range
• Specify which color we need to select and
give OK
• Those portions in the image that satisfies
the condition given will be selected and we
can manipulate on the selection
Layers, Channels and Paths
• Layers – Part of the image on which we can
work independently without affecting the
background. Any number of layers can be
created and positioned above the background.
• Paths – Similar to Layers.
• Difference is that Changes made on the Path
are visible if we click on the path. But changes
made on the layer is visible if we move the layer.
• Channels – Portions of image with similar color
or shade are kept as a channel. We can also
add new channel
Channels
• Four basic channels
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RGB (True picture)
Red – Picture with Red component alone
Green – Picture with Green component alone
Blue – Picture with Blue component alone
• Alpha channels
– We can select portions of image and create new
channel from it
– Select portion and right click and click Save Selection
as and give a name and Click Save
• Now in the channels palatte a new channel with
the name Alpha 1 is seen
Animated GIF
• Open an image
• Duplicate the image as many number of
times needed (In the layer tab, right click
on the background (image) and select
Duplicate layer)
• Add different noise levels for each layer
(Filter -> Noise -> Add Noise and give
different value for the noise level)
Animated GIF
• Switch to Image Ready (File -> Jump to Image
Ready)
• In the animation window, set the loop count and
the delay for the frame
• Duplicate the frame
• In each frame make a particular layer visible (In
Layers tab, on which ever layer we have Eye like
icon, that layer is visible. Click on the eye icon to
hide a layer. Again click on the place to show the
hidden layer)
• Click on Save optimized as from the File Menu,
give a name and click OK.
Panorama
• Panorama is a wider picture
• We need to have images taken in and
around the same area
• Those images are copied in different
layers of the same document
• Move the layers appropriately to create a
continuous but wide image
Publishing
• The images are collected together and placed in
a folder
• Click on File -> Automate -> Web Photo Gallery
• Choose the template for the gallery.
• Fill all information needed
• Click OK
• An HTML page will be created
• We can access those photos from HTML file