Digital Video, Image and Audio Processing

Digital image processing

 

What is a Digital Image?

 

 

 

 

 

 

 

 

 

 

 

 

History of Digital Image Processing 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 OpenGL (Open Graphics Library)^[2] is a cross-language, multi-platform application programming interface (API) for rendering 2D and 3D computer graphics. The API is typically used to interact with a Graphics processing unit (GPU), to achieve hardware-accelerated rendering. OpenGL was developed by Silicon Graphics Inc. (SGI) from 1991 and released in January 1992^[3] and is widely used in CAD, virtual reality, scientific visualization, information visualization, flight simulation, and video games. OpenGL is managed by the non-profit technology consortium Khronos Group.

 

 

 

 

 

 

Graphics Applications 

Adobe Photoshop for Technical Drawings

 

 When you start Photoshop, the Tools panel appears at the left of the screen. Some tools in the Tools panel have options that appear in the context-sensitive options bar.

You can expand some tools to show hidden tools beneath them. A small triangle at the lower right of the tool icon signals the presence of hidden tools.

You can view information about any tool by positioning the pointer over it. The name of the tool appears in a tool tip below the pointer.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Drawing Basics 

 

 

 Difference between Bitmap and Vector image

 

 

 

  Example of Essentials Workspace

 

 

Demo: Create new drawing 

 

 

 

 

In Photoshop shape properties can be edited that's why it is called as Parametric Editor

We can combine shapes in single layer by selecting below settings on PS

Change the settings of  more than a one layer is selecting on PS

Change the settings of  shape directly on PS

To perform the commit on PS

To Save drawing as PNG format file on PS

To access other PSD file from your drawing in on PS

To draw customer shapes with Pen tool on PS

To draw Text on layers on PS

To group the layers of drawing on PS

To add text inside of shape on PS

Color and Color Pallets on PS

 

 

To take the print of PS drawings through printer

Using Type and Styles

Basic Layer and Layer Management

 

 

 

 

 

Multilayer selection on PS

 

 

 

 

Marquee select tool for layer operations on PS

 

  

 

Perform Visibility operation on PS

 

 

 

 

 

 

 

 

Lock the particular layer of drawings on PS

Blend Mode on Layer of drawings on PS

Adding Effects at Layer level of drawings on PS

Shadow and Glow, Bitmap Tools, and Masks

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Select Vector based objects through Path information

 

 

 

 

 

Combining Layers, Duplication and Composition

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Drawing ArrowHead Rectangles

 

 

Digital Audio Fundamentals

 

Audio Sampling

 

 

 

 

 

 

What is Sampling?

 A sound bite is a short clip of speech or music extracted from a longer piece of audio, often used to promote or exemplify the full length piece. A sound bite is characterized by a short phrase or sentence that captures the essence of what the speaker was trying to say, and is used to summarize information and entice the reader or viewer.

 

 

 

 

 

 

 

Audio File Format

 

 

 

Audio Effects

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Audio Signal Chain