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Your computer screen displays images through a grid of tiny squares called pixels, each assigned a numerical color value. Pictures are stored numerically in the computer, with black and white images easier to encode than color since black and white pictures can be represented by numbers showing consecutive black or white pixels, with the first number always denoting white pixels.
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How Computers Represent Graphics
Graphics can be represented in computers using either bitmapped or vector graphics. Bitmapped graphics represent images as a two dimensional grid of pixels, where each pixel is assigned a binary number representing its color. More bits per pixel allow for more possible colors. The number of bits used per pixel is called the bit depth, with more bits providing higher color depth and quality.
Raster images (assignment)
Raster images are made up of pixels stored as an array of numerical values representing each pixel. There are two types: grayscale images representing shades of gray using 1-8 bits per pixel, and color images using a 3-tuple of red, green, and blue pixel values to represent colors. Color images are more common as they closely resemble real-world color experiences. Pixels in color images use a certain number of bits, such as 3 or 8 bits, for each color value in the 3-tuple to represent different color intensities and combinations that produce colors other than red, green, and blue.
Pixel and resolution
Pixels are the smallest controllable elements that make up images on electronic screens. They are arranged in grids and can only display one color at a time, but when clustered together can create smooth blends of colors. The resolution, or total number of pixels on a screen, determines how large individual pixels appear - higher resolutions have smaller, less noticeable pixels. The number of bits used to represent each pixel's color value determines how many colors can be displayed, with more bits allowing more colors. In gaming, higher resolution screens and consoles with more color bits have allowed for more detailed, realistic graphics over time as technology has advanced.
Representation of Bitmapped Graphics
Graphics are made up of tiny dots called pixels. The resolution determines image quality, with higher resolutions showing finer detail using smaller pixels. There are two main types of graphics - bitmapped images which represent colors in pixels as binary numbers, and vector graphics which use mathematical descriptions to draw images. Bitmapped graphics store color information for each pixel using a certain number of bits, allowing more colors to be represented with more bits. The number of bits used per pixel is called the bit depth, and affects how much memory is needed to store an image.
الوسائط المتعددة Multimedia تاج
This document discusses multimedia elements and digital images. It defines multimedia as a combination of text, images, sound and video, especially on computers or for entertainment. The document then focuses on digital images, discussing their importance, types (binary, grayscale, color), representation using pixels, file size calculation, and image processing techniques like matching. Key points covered include how images are represented as 2D arrays, with pixels having luminance or RGB values, and how file size depends on image depth, size and resolution. Image processing is used in many fields like medicine, military and education.
Homework
Pixel refers to the smallest individual element that makes up an image. Each pixel represents a specific color and location in a digital image. More pixels provide a more accurate representation of the original image. Pixels are arranged in a two-dimensional grid and can be represented by dots or squares. Color depth refers to the number of colors an image can display, ranging from 2 colors for 1-bit images up to over 16 million colors for 24-bit true color images. Image resolution is a measure of detail or quality, with higher resolution providing more detail. Vector images use mathematical points to define shapes while raster images use a grid of pixels of varying colors. Aspect ratio expresses the proportional relationship between an image's width and its height.
SD & D Bitmapped Graphics
An image is made up of pixels, with resolution determining image quality. There are two types of graphics - bitmapped (uses pixels of color) and vector (uses geometric shapes). Bitmapped graphics store images as a 2D array of binary numbers representing pixel color using a certain number of bits per pixel to determine color depth. More bits allow more colors but increase file size. Resolution and file size are directly related, with higher resolution images using more memory.
Digital image
Digital images can be either raster or vector images. Raster images are made up of grids of pixels that each have a color value, while vector images use geometric shapes and mathematical expressions. The color depth, or bit depth, determines the number of possible colors for each pixel in a raster image and affects the image size. Vector images can be scaled to any size without losing quality since they are based on mathematical expressions rather than pixels.
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How Computers Represent Graphics
Graphics can be represented in computers using either bitmapped or vector graphics. Bitmapped graphics represent images as a two dimensional grid of pixels, where each pixel is assigned a binary number representing its color. More bits per pixel allow for more possible colors. The number of bits used per pixel is called the bit depth, with more bits providing higher color depth and quality.
Raster images (assignment)
Raster images are made up of pixels stored as an array of numerical values representing each pixel. There are two types: grayscale images representing shades of gray using 1-8 bits per pixel, and color images using a 3-tuple of red, green, and blue pixel values to represent colors. Color images are more common as they closely resemble real-world color experiences. Pixels in color images use a certain number of bits, such as 3 or 8 bits, for each color value in the 3-tuple to represent different color intensities and combinations that produce colors other than red, green, and blue.
Pixel and resolution
Pixels are the smallest controllable elements that make up images on electronic screens. They are arranged in grids and can only display one color at a time, but when clustered together can create smooth blends of colors. The resolution, or total number of pixels on a screen, determines how large individual pixels appear - higher resolutions have smaller, less noticeable pixels. The number of bits used to represent each pixel's color value determines how many colors can be displayed, with more bits allowing more colors. In gaming, higher resolution screens and consoles with more color bits have allowed for more detailed, realistic graphics over time as technology has advanced.
Representation of Bitmapped Graphics
Graphics are made up of tiny dots called pixels. The resolution determines image quality, with higher resolutions showing finer detail using smaller pixels. There are two main types of graphics - bitmapped images which represent colors in pixels as binary numbers, and vector graphics which use mathematical descriptions to draw images. Bitmapped graphics store color information for each pixel using a certain number of bits, allowing more colors to be represented with more bits. The number of bits used per pixel is called the bit depth, and affects how much memory is needed to store an image.
الوسائط المتعددة Multimedia تاج
This document discusses multimedia elements and digital images. It defines multimedia as a combination of text, images, sound and video, especially on computers or for entertainment. The document then focuses on digital images, discussing their importance, types (binary, grayscale, color), representation using pixels, file size calculation, and image processing techniques like matching. Key points covered include how images are represented as 2D arrays, with pixels having luminance or RGB values, and how file size depends on image depth, size and resolution. Image processing is used in many fields like medicine, military and education.
Homework
Pixel refers to the smallest individual element that makes up an image. Each pixel represents a specific color and location in a digital image. More pixels provide a more accurate representation of the original image. Pixels are arranged in a two-dimensional grid and can be represented by dots or squares. Color depth refers to the number of colors an image can display, ranging from 2 colors for 1-bit images up to over 16 million colors for 24-bit true color images. Image resolution is a measure of detail or quality, with higher resolution providing more detail. Vector images use mathematical points to define shapes while raster images use a grid of pixels of varying colors. Aspect ratio expresses the proportional relationship between an image's width and its height.
SD & D Bitmapped Graphics
An image is made up of pixels, with resolution determining image quality. There are two types of graphics - bitmapped (uses pixels of color) and vector (uses geometric shapes). Bitmapped graphics store images as a 2D array of binary numbers representing pixel color using a certain number of bits per pixel to determine color depth. More bits allow more colors but increase file size. Resolution and file size are directly related, with higher resolution images using more memory.
Digital image
Digital images can be either raster or vector images. Raster images are made up of grids of pixels that each have a color value, while vector images use geometric shapes and mathematical expressions. The color depth, or bit depth, determines the number of possible colors for each pixel in a raster image and affects the image size. Vector images can be scaled to any size without losing quality since they are based on mathematical expressions rather than pixels.
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Template for cs308 project setup screencast
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Lesson one presentation
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1) IITs should be granted complete autonomy to manage themselves more flexibly and pursue innovative ideas.
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This lesson teaches students how to design their own project using the Scratch programming environment. It provides criteria for the project to include multiple sprites, backgrounds, user interaction, variables, costumes for sprites, and imported images. Students are instructed to explore existing Scratch projects for inspiration, then design their sprites, backgrounds and variables. They are asked to justify their design choices and create a storyboard before beginning programming the scripts.
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Lesson two presentation
This document discusses how to import images and audio into Scratch projects. It provides instructions on how to search for an image online, save it, and import it into Scratch to create a new sprite. It also explains how to import audio files, such as music or recorded sounds, and add them into scripts to make sprites appear to make sounds. The tutorial demonstrates how to edit sprite properties and scripts to program sprite movements and incorporate different effects using imported images and audio.
Lesson five plan
This lesson plan outlines a lesson on creating a project using Scratch. The objectives are for students to plan their own project by thinking of ideas and purposes, and to begin creating sprites and backgrounds. Students will work through a storyboard planning process and PowerPoint tutorial. Higher ability students should create more complex characters and varied backgrounds. Assessment will involve questions about project plans and characters. Students will begin coding sprites for their projects.
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This document provides coding challenges related to switch statements in Java. It includes:
1. Three coding challenges - to identify, apply, and reorder/expand switch statements in code.
2. An explanation of switch statements and how they can simplify decision-making compared to if statements.
3. An example of a switch statement written in Java that takes an integer representing a month and prints the corresponding month string. Learners are challenged to complete this code by adding the remaining months.
4. Another coding challenge where learners must correct errors in code for a rock-paper-scissors game to make it run properly. An extension challenge is provided to allow computer gameplay against a human.
Open Badges Super Learners Year-7 & 8
This document provides an overview of a Mozilla Open Badges Design Workshop. It introduces Patrick McGee, the presenter, and explains that the workshop will involve designing, creating data for, and issuing Open Badges. Open Badges are described as a way to learn about software engineering. The document outlines the steps for creating an Open Badge, which includes drawing a badge design, writing information about it, copying it into a computer program, saving the digital badge file, transferring the image, and uploading it to be "baked" into an Open Badge.
Making a screencast for CS308 project setup
The document provides instructions for making a screencast using Camstudio software. It lists requirements like downloading Camstudio and using headphones without speakers. It outlines two instructions sections - the first frame should be a provided project template and a transcript must be submitted; the video should demonstrate installing additional software, setting up and configuring code by starting with the submitted zip file, and adding photos of a bot and arena to the template.
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Android and Hard Real Time
This document discusses running real-time tasks on Android. It notes that while Android's Linux kernel lacks real-time capabilities and digital I/O support needed for safety-critical real-time applications, alternatives like RTAI, RT-Linux, or a custom SParK hypervisor could potentially allow running one periodic hard real-time task concurrently with the Android OS without resource sharing. The document considers various options and references materials on integrating real-time capabilities into Android.
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Lesson six plan
This lesson plan outlines a Scratch coding lesson where students will continue working on projects they began previously. The objectives are for all students to build upon their project ideas and begin coding, for most to review and improve their plans and coding, and for some to evaluate and improve their project by justifying changes. Students will receive guidance through a PowerPoint tutorial and work at their own pace, with support available. The lesson will conclude with students providing peer feedback on projects.
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Lesson three plan
This lesson plan outlines a lesson on shapes using the programming software Scratch. The objectives are for students to determine what shapes can be made in Scratch using appropriate controls, know sequences to make shapes and change attributes, and create patterns. Students will start by making basic shapes and progress to more complex shapes and patterns. Differentiation is provided through varying tasks and support. Assessment will involve questions about shape properties and Scratch controls.
Lesson two plan
The lesson teaches students how to import images and sounds into Scratch projects to create different effects, with the learning objectives being to look at controls to change sprite appearances and add sound, import different images and sounds, and complete a tutorial project adding images and sounds while changing the background. The lesson involves students matching pictures to words, reviewing a teacher project, working through a PowerPoint tutorial, and providing feedback on an improperly designed project.
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This lesson plan introduces students to the programming language Scratch. The learning objectives are for students to recognize Scratch controls and apply them appropriately in a test project. Students will work through a PowerPoint to create a basic Scratch project using different controls. Higher-ability students will be encouraged to improve on the basic project and evaluate problem areas and solutions. The lesson concludes with students sharing their projects and discussing improvements and control usage.
Lesson three presentation
This lesson teaches students how to create different shapes using the pen tool in Scratch by providing scripts to draw simple shapes and having students alter the scripts to create more complex shapes like rectangles, octagons, triangles, and circles. Students are asked to predict the shapes that will be drawn and change variables like pen color and number of degrees turned to experiment with patterns.
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Presentation ir
- 2. Your computer screen is made up of a grid of tiny squares called ‘pixels’ (Picture Cells). Each tiny square is given a numerical value which determines it’s colour
- 3. A computer can only store numerical information. A picture therefore is stored in a numerical form. Black and white pictures are easier to de-code than colour. Look at the picture below: When coding a black and white image, the numbers represent how many pixels are consecutively either black or white. The first number will always represent the number of white pixels.