Understanding Digital Images and Processing

• Images are visual representations of something
• Images are like an object produced on photographic material
• Images are pictures produced on an electronic display such as a television or computer screen
• Images are mental conceptions, pictures, or impressions of something
• Examples of images include painting, a picture from a camera, or a scanned picture

Digital Images

• Digital imaging is the process of creating a digital mage
• Digital images are shown digitally, in groups of combinations bits (0 or 1)
• Pixels are the smallest element of an image

Digital Image Processing

• Image processing is a computational technique for analyzing, enhancing, compressing, and reconstructing images
• Digital image processing is done using computers to enhance image quality and improve pictorial information for human perception
• The first step of digital image processing is importing, where a scanner or digital camera captures an image
• Analysis and manipulation of the image are then accomplished using specialized software
• Digital Image Processing means processing images by a digital computer
• Digital image processing uses computer algorithms to enhance images or extract useful information
• Digital image processing uses algorithms and mathematical models to process and analyze digital images
• The goals of digital image processing are to enhance quality, extract meaningful information, and automate image-based tasks

Multimedia Production Planning Strategies

• The word "multi" signifies "many," and "media" is the plural of "medium."
• Media refers to communication channels that disseminate news, music, movies, education, promotional messages, and other data
• Media includes physical and online newspapers/magazines, television, radio, billboards, telephone, the Internet, and fax
• Multimedia allows information to be easily transferred between locations
• Multimedia presents text, pictures, audio, and video with tools that allow a user to navigate, engage, create, and communicate via a computer
• Multimedia is a computerized method of combining textual data, audio, visuals (video), graphics (images), clips, and animations
• Multimedia includes storing, transmitting, and combining text, graphics, audio, and video
• Storyboards clearly express how a story will flow in multimedia products such as animation, film, movies, or books
• Storyboards use graphics to sequence illustrations and images to visually tell a story

Developing Storyboards

• Storyboarding creates a sequence of screens to provide an overview of a project and demonstrate how its program elements work
• Multimedia storyboards include video, sketches, text, audio, photos, and prototypes for pre-visualization

Using Image Processing Software

• Image processing software organizes, retouches, and edits images saved on CDs/DVDs or transferred from cameras to PCs
• This software edits and crops out unwanted images, such as a red-eye effect
• Some image processing software includes Photoshop, MS-paint, Gimp, Paint 3D, Photo styler, Photo editor and photo explosion
• Photoshop works on raster based images, and performs any number of manipulations

Launching Adobe Photoshop

• To open Adobe Photoshop 2021, click Start, type "Adobe Photoshop 2021," and click the icon
• The Photoshop Home screen will appear

Image Resolution

• Image resolution is described in Pixels per Inch (PPI)
• Higher resolutions contain more pixels per inch, resulting in more pixel information and crisp images

Adobe Photoshop Toolbox

• Photoshop Toolbox Elements
• Moving and Selection Tools:
• Move: Moves layers, selections, and guides
• Lasso: Allows freehand selections; includes Polygonal and Magnetic lasso tools
• Object Selection: Selects objects with a rough selection; includes Quick and Magic wand tools
• Crop and Slice Tools:
• Crops: Remove unwanted image areas; comes with Perspective Crop, Slice, and Slice Select options
• Frame: Places an image in rectangular or elliptical shapes
• Measurement Tools:
• Eyedropper: Samples colors; includes 3D Material, Eyedropper, Color, Sample, Ruler, Note, and Count tools
• Retouching and Painting Tools
• Spot Healing Brush: Removes blemishes quickly; includes Healing Brush, Patch, Content-Aware Move, and Red Eye tools
• Brush: Paints strokes on layers; the primary painting tool, which includes Pencil, Color Replacement, and Mixer brush
• Clone Stamp: Samples pixels from one area to paint over others; includes Pattern Stamp tool
• History Brush: Restores the image to an earlier state; includes Art History brush
• Eraser: Erases pixels; also paints in an earlier historical state with Background Eraser and Magic Eraser
• Gradient Tool: Draws gradual color blends with the Gradient Editor; includes Paint Bucket and 3D Material Drop
• Blur: Draws gradual blends between multiple colors with the Gradient Editor; includes Paint Bucket and 3D Material Drop
• Dodge: Lightens areas painted over; includes Burn and Sponge tools
• Drawing and Typing Tools
• Pen: Draws accurate shapes and selections; includes Freeform Pen, Curvature Pen, Add/Delete Anchor Point, and Convert Point tools
• Horizontal Type: Adds standard text; includes Vertical Type, Vertical Type Mask, and Horizontal Type Mask tools
• Path Selection: Selects and moves entire paths, represented by black
• Rectangle: Draws rectangular paths or shapes; also includes Rounded Rectangle, Ellipse, Triangle, Polygon, Line, and Custom tools
• Navigation Tools
• Hand: Clicks and drags to view different areas when zoomed in; includes Rotate View
• Zoom: Zooms into specific areas; hold Alt to zoom ou

Cropping Images Using Adobe Photoshop

• Cropping removes photo portions to focus or strengthen the composition
• Cropping is done with the Crop Tool, to a specific size or the Marquee Tool

Image Sharpening

• Sharpening enhances the edges of objects in an image for a clearer result
• Sharpening excessively can make an image look worse or lead to detail loss
• Image sharpening makes a picture crisper and clearer
• To sharpen images in Photoshop, use Unsharp Mask, Smart Sharpen, or High Pass options