Résumé
PNG (Portable Network Graphics) is the next-generation graphics file format for the Web. Designed as an open-source format to replace GIF (which uses a proprietary compression scheme for which software makers must pay a licensing fee), PNG is better, smaller, more extensible, and FREE.
Already supported by major software like Macromedia Fireworks, Adobe Photoshop, and Microsoft Office 98, as well as Netscape Navigator and Microsoft Internet Explorer, PNG is the next big thing in computer graphics. Similar to the GIF and TIFF formats, but far better, PNG will soon become the preferred file format for color-critical web images and high-quality graphics interchange. Even for noncritical images, PNG will likely replace GIF as the standard web format. PNG supports lossless compression, variable transparency information, and a range of color depths. PNG also provides direct support for gamma correction, the cross-platform control of image "brightness," and transparency. PNG: The Definitive Guide addresses the needs of graphic designers who want to get the most out of the format and programmers who want to add full PNG-support to their own applications. Specifically, Roelofs covers implementing PNG with the libpng C library. The book includes explanations of important improvements with PNG, such as gamma correction and the standard color spaces for precise reproduction of image colors on a wide range of systems.
PNG: The Definitive Guide is the first book devoted exclusively to teaching and documenting the important new format, PNG. It is an indispensable compendium for Web content developers and is chock full of examples, sample code, and practical hands-on advice.
Table of contents
- Preface
- Chapter 1: An Introduction to PNG
- Overview of Image Properties
- What Is PNG Good For?
- Case Study of a PNG-Supporting Image Editor
- Chapter 2: Applications: WWW Browsers and Servers
- WWW Browsers
- WWW Servers
- Chapter 3: Applications: Image Viewers
- Windows 95/98/NT
- Windows 3.x
- VMS
- Unix
- OS/2
- Macintosh
- Java
- DOS
- BeOS
- Atari
- Amiga
- Acorn RISC OS
- Chapter 4: Applications: Image Editors
- Photoshop 5
- Photoshop 4
- ImageReady
- Paint Shop Pro
- The Gimp
- Other Image Editors
- Chapter 5: Applications: Image Converters
- pngcrush
- pnmtopng
- gif2png
- Tiff2png
- pngcheck
- Other Conversion Programs
- Chapter 6: Applications: VRML Browsers and Other 3D Apps
- Cosmo Player
- WorldView/MSVRML
- blaxxun Contact
- Viscape Universal
- LibVRML97/Lookat
- FreeWRL
- VRMLView
- Other VRML Browsers
- Other 3D Applications
- Chapter 7: History of the Portable Network Graphics Format
- Anatomy of an Internet Working Group
- Implementation
- MNG
- Mainstream Support and Present Status
- Chapter 8: PNG Basics
- Chunks
- PNG Signature
- A Word on Color Representation
- The Simplest PNG
- PNG Image Types
- Interlacing and Progressive Display
- Chapter 9: Compression and Filtering
- Filtering
- The Deflate Compression Algorithm
- Real-World Comparisons
- Practical Compression Tips
- Chapter 10: Gamma Correction and Precision Color
- Transfer Functions and Gamma
- The gAMA Chunk
- Encoding Gamma
- Gamma Gotchas
- Chromaticity
- Color Management Systems and sRGB
- ICC Profiles
- Chapter 11: PNG Options and Extensions
- Background Color (bKGD)
- Timestamp (tIME)
- Latin-1 Text Annotations (tEXt, zTXt)
- International Text Annotations (iTXt)
- Histogram (hIST)
- Suggested Palette (sPLT)
- Significant Bits (sBIT)
- Physical Pixel Dimensions (pHYs)
- Physical Scale (sCAL)
- Image Offset (oFFs)
- Pixel Calibration (pCAL)
- Fractal Parameters (fRAc)
- GIF Conversion Info (gIFg, gIFx)
- GIF Plain Text (gIFt)
- Other Chunks
- Chapter 12: Multiple-Image Network Graphics
- Common Applications of MNG
- MNG Structure
- The Simplest MNG
- An Animated MNG
- An Algorithmic MNG
- A JPEG Image with Transparency
- MNG Applications
- The Future?
- Chapter 13: Reading PNG Images
- A libpng-Based, PNG-Reading Demo Program
- Preliminaries
- readpng_init()
- readpng_get_bgcolor()
- Design Decisions
- Gamma and Color Correction
- readpng_get_image()
- readpng_cleanup()
- Compositing and Displaying the Image
- Getting the Source Code
- Alternative Approaches
- Chapter 14: Reading PNG Images Progressively
- Preliminaries
- readpng2_init()
- readpng2_decode_data()
- readpng2_info_callback()
- readpng2_row_callback()
- Compositing and Displaying the Image
- readpng2_end_callback()
- readpng2_cleanup()
- Getting the Source Code
- Chapter 15: Writing PNG Images
- A libpng-Based, PNG-Writing Demo Program
- Gamma Correction
- Text Chunks
- writepng_version_info()
- writepng_init()
- Interlaced PNG: writepng_encode_image()
- Noninterlaced PNG: writepng_encode_row()
- writepng_cleanup()
- Getting the Source Code
- Chapter 16: Other Libraries and Concluding Remarks
- Cross-Platform Libraries
- Windows-Specific Libraries
- Concluding Remarks
- .TC 0 "References"
- Glossary
- Index
Caractéristiques techniques
PAPIER | |
Éditeur(s) | O'Reilly |
Auteur(s) | Greg Roelofs |
Parution | 16/06/1999 |
Nb. de pages | 320 |
EAN13 | 9781565925427 |
Avantages Eyrolles.com
Consultez aussi
- Les meilleures ventes en Graphisme & Photo
- Les meilleures ventes en Informatique
- Les meilleures ventes en Construction
- Les meilleures ventes en Entreprise & Droit
- Les meilleures ventes en Sciences
- Les meilleures ventes en Littérature
- Les meilleures ventes en Arts & Loisirs
- Les meilleures ventes en Vie pratique
- Les meilleures ventes en Voyage et Tourisme
- Les meilleures ventes en BD et Jeunesse