The doc discusses Adaptive Huffman for data encryption (by Ismaeel Abu-Abdalla). Adaptive Huffman is used for video encryption to pass it on a stream and synchronously be played in the other end other stream. VLC Player API has been used for this (by Mehdi Zonji). This doc also discusses the implementation of different lossless compression techniques (by me) in multimedia; RLE (compression and decompression for any data type; specific technique is used for images.) RLE Quad Tree compress images according to their color bulks. The engine implements also the lossless techniques based on adaptive dictionaries; i.e. LZ77(for text and images, using windows and lookahead buffers) and LZW (for text and images, using a dictionary). Arithmetic coding algorithm is also implemented (by Hasan Sarhan.)
This document provides an overview of data compression techniques. It discusses lossless compression algorithms like Huffman encoding and LZW encoding which allow for exact reconstruction of the original data. It also discusses lossy compression techniques like JPEG and MPEG which allow for approximate reconstruction for images and video in order to achieve higher compression rates. JPEG divides images into 8x8 blocks and applies discrete cosine transform, quantization, and run length encoding. MPEG spatially compresses each video frame using JPEG and temporally compresses frames by removing redundant frames.
Data compression huffman coding algorithamRahul Khanwani
The document discusses Huffman coding, a lossless data compression algorithm that uses variable-length codes to encode symbols based on their frequency of occurrence. It explains that Huffman coding assigns shorter codes to more frequent symbols for efficient data compression. The document provides details on how the Huffman coding algorithm works by constructing a binary tree from the frequency of symbols and assigning codes based on paths in the tree. It also discusses different types of Huffman coding like static, dynamic and adaptive probability distributions and provides examples to illustrate the adaptive Huffman coding process.
The document discusses various data compression techniques, including lossless compression methods like Lempel-Ziv (LZ) and Lempel-Ziv-Welch (LZW) algorithms. LZ algorithms build an adaptive dictionary while encoding to replace repeated patterns with codes. LZW improves on LZ78 by using a dictionary indexed by codes. The encoder outputs codes for strings in the input and adds new strings to the dictionary. The decoder recreates the dictionary to decompress the data. LZW achieves good compression and is used widely in formats like PDF.
This document discusses different compression techniques including lossless and lossy compression. Lossless compression recovers the exact original data after compression and is used for databases and documents. Lossy compression results in some loss of accuracy but allows for greater compression and is used for images and audio. Common lossless compression algorithms discussed include run-length encoding, Huffman coding, and arithmetic coding. Lossy compression is used in applications like digital cameras to increase storage capacity with minimal quality degradation.
There are two categories of data compression methods: lossless and lossy. Lossless methods preserve the integrity of the data by using compression and decompression algorithms that are exact inverses, while lossy methods allow for data loss. Common lossless methods include run-length encoding and Huffman coding, while lossy methods like JPEG, MPEG, and MP3 are used to compress images, video, and audio by removing imperceptible or redundant data.
Types of Data compression, Lossy Compression, Lossless compression and many more. How data is compressed etc. A little extensive than CIE O level Syllabus
This document discusses data compression techniques. It begins with an introduction to data compression and why it is useful to reduce unnecessary space. It then discusses different types of data compression, including lossless compression techniques like Huffman coding, Lempel-Ziv, and arithmetic coding as well as lossy compression for images, audio, and video. One technique, Shannon-Fano coding, is explained in detail with an example. The document concludes that while Shannon-Fano is simple, Huffman coding produces better compression and is more commonly used.
This document provides an overview of data compression techniques. It discusses lossless compression algorithms like Huffman encoding and LZW encoding which allow for exact reconstruction of the original data. It also discusses lossy compression techniques like JPEG and MPEG which allow for approximate reconstruction for images and video in order to achieve higher compression rates. JPEG divides images into 8x8 blocks and applies discrete cosine transform, quantization, and run length encoding. MPEG spatially compresses each video frame using JPEG and temporally compresses frames by removing redundant frames.
Data compression huffman coding algorithamRahul Khanwani
The document discusses Huffman coding, a lossless data compression algorithm that uses variable-length codes to encode symbols based on their frequency of occurrence. It explains that Huffman coding assigns shorter codes to more frequent symbols for efficient data compression. The document provides details on how the Huffman coding algorithm works by constructing a binary tree from the frequency of symbols and assigning codes based on paths in the tree. It also discusses different types of Huffman coding like static, dynamic and adaptive probability distributions and provides examples to illustrate the adaptive Huffman coding process.
The document discusses various data compression techniques, including lossless compression methods like Lempel-Ziv (LZ) and Lempel-Ziv-Welch (LZW) algorithms. LZ algorithms build an adaptive dictionary while encoding to replace repeated patterns with codes. LZW improves on LZ78 by using a dictionary indexed by codes. The encoder outputs codes for strings in the input and adds new strings to the dictionary. The decoder recreates the dictionary to decompress the data. LZW achieves good compression and is used widely in formats like PDF.
This document discusses different compression techniques including lossless and lossy compression. Lossless compression recovers the exact original data after compression and is used for databases and documents. Lossy compression results in some loss of accuracy but allows for greater compression and is used for images and audio. Common lossless compression algorithms discussed include run-length encoding, Huffman coding, and arithmetic coding. Lossy compression is used in applications like digital cameras to increase storage capacity with minimal quality degradation.
There are two categories of data compression methods: lossless and lossy. Lossless methods preserve the integrity of the data by using compression and decompression algorithms that are exact inverses, while lossy methods allow for data loss. Common lossless methods include run-length encoding and Huffman coding, while lossy methods like JPEG, MPEG, and MP3 are used to compress images, video, and audio by removing imperceptible or redundant data.
Types of Data compression, Lossy Compression, Lossless compression and many more. How data is compressed etc. A little extensive than CIE O level Syllabus
This document discusses data compression techniques. It begins with an introduction to data compression and why it is useful to reduce unnecessary space. It then discusses different types of data compression, including lossless compression techniques like Huffman coding, Lempel-Ziv, and arithmetic coding as well as lossy compression for images, audio, and video. One technique, Shannon-Fano coding, is explained in detail with an example. The document concludes that while Shannon-Fano is simple, Huffman coding produces better compression and is more commonly used.
إدارة السلع او إدارة المخازن تعتبر من العمليات المهمة لأصحاب المحلات التجارية خاصة اصحاب المستودعات، وعملية إدارة المخازن تتم غالبا عن طريق استعمال الأوراق، مما يخلق العديد من المعيقات كالتأخر في اعداد التقارير، مغالطات في الحساب ... سهولة تلف الملفات والعديد العديد من المشاكل.
ولحل المشكلة يتم البحث عن طرق جديدة وأدوات تمكن من تسهيل عملية إدارة السلع (المخازن)، ومن اهم تلك الأدوات الاعتماد على التقنيات الحديثة من برامج وأنظمة لإدارة المخازن، لكن مشكلة هذه الأخيرة تكون اما معقدة واما تحتوي على أدوات متقدمة تستهلك موارد الحاسوب.
ولمعالجة هذه المشاكل قامت شركة عبر الخليج لتقنية المعلومات بتطوير برنامج خاص بها وذلك بالاستعانة بمبرمجين مبدعين قادرين على المزج بين التقنية والابداع، حيث تم بناء نظام فعال، امن وغير معقد، يتوفر على العمليات الضرورية لكل صاحب مخزن، حيث من خلال هذا النظام ستتمكن من:
- إدارة العملاء
- إدارة المزودين
- إدارة السلع
- إدارة المخزن
- إدارة المبيعات
- الحصول على تقارير
- إدارة المستخدمين
برنامج إدارة المبيعات من شركة عبر الخليج لتقنية المعلومات، يوفر العديد من المزايا سهلة الاستعمال، اذ يتميز كذلك بواجهة رسومية سهلة ومريحة.
Ultra Fast, Cross Genre, Procedural Content Generation in Games [Master Thesis]Mohammad Shaker
In my MSc. thesis, I have re-tackled the problem of procedurally generating content for physics-based games I have previously investigated in my BSc. graduation thesis. This time around I propose two novel methods: the first is projection based for faster generation of physics-based games content. The other, The Progressive Generation, is a generic, wide-range, across genre, customisable with playability check method all bundled in a fast progressive approach. This new method is applied on two completely different games: NEXT And Cut the Rope.
More Related Content
Similar to Adaptive Huffman and Lossless Compression Techniques - Documentation
إدارة السلع او إدارة المخازن تعتبر من العمليات المهمة لأصحاب المحلات التجارية خاصة اصحاب المستودعات، وعملية إدارة المخازن تتم غالبا عن طريق استعمال الأوراق، مما يخلق العديد من المعيقات كالتأخر في اعداد التقارير، مغالطات في الحساب ... سهولة تلف الملفات والعديد العديد من المشاكل.
ولحل المشكلة يتم البحث عن طرق جديدة وأدوات تمكن من تسهيل عملية إدارة السلع (المخازن)، ومن اهم تلك الأدوات الاعتماد على التقنيات الحديثة من برامج وأنظمة لإدارة المخازن، لكن مشكلة هذه الأخيرة تكون اما معقدة واما تحتوي على أدوات متقدمة تستهلك موارد الحاسوب.
ولمعالجة هذه المشاكل قامت شركة عبر الخليج لتقنية المعلومات بتطوير برنامج خاص بها وذلك بالاستعانة بمبرمجين مبدعين قادرين على المزج بين التقنية والابداع، حيث تم بناء نظام فعال، امن وغير معقد، يتوفر على العمليات الضرورية لكل صاحب مخزن، حيث من خلال هذا النظام ستتمكن من:
- إدارة العملاء
- إدارة المزودين
- إدارة السلع
- إدارة المخزن
- إدارة المبيعات
- الحصول على تقارير
- إدارة المستخدمين
برنامج إدارة المبيعات من شركة عبر الخليج لتقنية المعلومات، يوفر العديد من المزايا سهلة الاستعمال، اذ يتميز كذلك بواجهة رسومية سهلة ومريحة.
Ultra Fast, Cross Genre, Procedural Content Generation in Games [Master Thesis]Mohammad Shaker
In my MSc. thesis, I have re-tackled the problem of procedurally generating content for physics-based games I have previously investigated in my BSc. graduation thesis. This time around I propose two novel methods: the first is projection based for faster generation of physics-based games content. The other, The Progressive Generation, is a generic, wide-range, across genre, customisable with playability check method all bundled in a fast progressive approach. This new method is applied on two completely different games: NEXT And Cut the Rope.
Short, Matters, Love - Passioneers Event 2015Mohammad Shaker
Short, Matters, Love is a presentation I prepared for freshmen students at the Faculty of Information Technology in Damascus, Syria organised by Passioneers - 2015
This document discusses Unity3D and game development. It provides an overview of Unity3D and other game engines like Unreal Engine, comparing their features and costs. Examples are given of popular games made with each engine. The document also lists several games the author has made using Unity3D and provides some additional resources and references.
The document discusses various topics related to mobile application design including cloud interaction, Android touch and gesture interaction, UI element sizing, screen sizes, changing orientation, retaining objects during configuration changes, multi-device targeting, and wearables. It provides examples and guidelines for designing applications that can adapt to different devices and configurations.
The document discusses principles of interaction design, color theory, and game design. It covers topics like primary and secondary colors, color harmonies, using color to attract attention and set mood, the importance of white space and negative space in design, and how games like Journey, Fez, Luftrausers, Monument Valley, Ori and the Blind Forest, and Limbo effectively use techniques like the rule of thirds, establishing a sense of goal, and game feel.
This document discusses various topics related to typography including letter shapes like the letter "T", how words for concepts like water have evolved across languages, symbols for ideas like fish, and different writing styles such as styles that would be impossible to write. It examines typography from multiple perspectives like shapes, language evolution, symbols, and stylization.
Interaction Design L04 - Materialise and CouplingMohammad Shaker
This document discusses various aspects of coupling and interaction design in mobile applications. It addresses good and bad examples of coupling on Android and iOS, such as how apps are switched between. It also discusses using accurate text to represent backend processes, and using faster progress bars to reduce cognitive load on users. Visualizations are suggested to improve progress bars.
The document discusses various options for storing data in an Android application including SharedPreferences for simple key-value pairs, internal storage for private files, external storage for public files, SQLite databases for structured data, network connections for storing data on a web server, and ContentProviders for sharing data between applications. It provides details on using SharedPreferences, internal SQLite databases stored in the application's files, and ContentProviders for sharing Contacts data with other apps.
The document discusses various interaction design concepts in Android including toasts, notifications, threads, broadcast receivers, and alarms. It provides code examples for creating toasts, setting notification priorities, and scheduling alarms to fire at boot or at specific times using the AlarmManager. Broadcast receivers can be used to set alarms during device boot by listening for the BOOT_COMPLETED intent filter and implementing the onReceive callback.
This document provides an overview of various mobile development technologies and frameworks including Cloud, iOS, Android, iPad Pro, Xcode, Model-View-Controller (MVC), C, Objective-C, Foundation data types, functions calls, Swift, iOS Dev Center, coordinate systems, Windows Phone, .NET support, MVVM, binding, WebClient, and navigation. It also mentions tools like Expression Blend and frameworks like jQuery Mobile, PhoneGap, Sencha Touch, and Xamarin.
This document discusses various topics related to mobile app design including user experience (UX), user interface (UI), interaction design, user constraints like limited data/battery and screen size, and using context like location to improve the user experience. It provides examples of a pizza ordering app and making ATM machines smarter. It also covers design patterns and principles like focusing on user needs and testing designs through feedback.
This document discusses principles of visual organization and responsive grid systems for web design. It mentions laws of proximity, similarity, common fate, continuity, closure, and symmetry which help organize visual elements. It also discusses column-based and ratio-based grid systems as well as responsive grid systems that adapt to different screen widths, citing examples from Pinterest, Bootstrap, and the website www.mohammadshaker.com which demonstrates responsive design.
This document provides an overview comparison of key aspects of mobile app development for iOS and Android platforms. It discusses differences in app store policies, pricing, monetization options like ads and in-app purchases, development tools including engines like Unity and Unreal, and the publishing process. Key points mentioned include Android apps averaging over 2.5x the price of similar iOS apps, Apple's restrictive app review policies, the 70/30 revenue split in Google Play Store, and tools for user testing and publishing on both platforms. It also shares stats on the revenue and success of specific apps like Monument Valley.
The document discusses various ways to implement cloud functionality in Android applications using services like Parse and Android Backup. It provides code examples for backing up app data to the cloud using Android Backup, setting up a backend using Parse, pushing notifications with Parse, and performing analytics tracking with Parse.
This document discusses several topics related to developing Android apps including:
1. Adding markers to maps by setting an onMapClickListener and adding a MarkerOptions to the clicked location.
2. Signing into apps with Google accounts using the Google Identity API.
3. Following Material Design guidelines for visual style and user interfaces.
4. Maintaining multiple APK versions and using OpenGL ES for games.
This document discusses various techniques for styling Android applications including adding styles, overriding styles, using themes, custom backgrounds, nine-patch images, and animations. It provides links to tutorials and documentation on animating views with zoom animations and other motion effects.
This document provides information about various Android development topics including:
- ListAdapters and mapping models to UI using an MVVM-like pattern
- Creating custom lists
- Starting a new activity using an Intent and passing data between activities
- Understanding the Android activity lifecycle and methods like onPause() and onResume()
- Handling configuration changes that recreate the activity
- Working with permissions
The document discusses common patterns for working with lists, launching new screens, and handling activity state changes. It also provides code examples for starting a new activity, passing data between activities, and handling the activity lifecycle callbacks.
This document provides an overview of various topics related to mobile application development including cloud computing, interaction design, Android, iOS, web technologies like HTML5 and JavaScript, programming languages like Java and Objective-C, frameworks, gaming, user experience design, and more. It discusses tools for Android development and covers basics of creating an Android app like setting up the IDE, creating the UI, adding interactivity, debugging, and referencing documentation.