Title. T385.K866 1999 006.6'869--dc21 99-38515 CIP Printed in the United States of America 10 9 8 7 6 5 4 3 2 1 President, CEO Keith Weiskamp Publisher Steve Sayre Acquisitions Editor Mariann 118 Fuzzy Select 119 The Bezier Selection Tool 120 Intelligent Scissors 123 Chapter 8: Paint Tools ................................................... 127 The Color Picker 128 Palettes image manipulation programs. Version 0.54 featured: • Support for 8, 15, 16 and 24 bit color • Ordered and Floyd-Steinberg dithering for 8 bit displays • Viewing images as RGB color, grayscale or indexed

2 Creating a Basic Shape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 8 Combining Images 101 8.1 Introduction to Layers . . . . . . . . . . . . . . . . . . . . . . . . . What’s New in GIMP 2.6? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 974 .8 What’s New in GIMP 2.8? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 978 is now ~1.5 to ~2 times faster. Moreover, GIMP is now capable of load- ing CMYK(A) PSD files (only 8-bit per channel for now). It does so by converting pixels to RGB(A) float using sRGB as the profile

Basic Shape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 8 Combining Images 100 8.1 Introduction to Layers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154 GNU Image Manipulation Program 8 / 653 III Function Reference 157 12 Toolbox 158 12.1 The Toolbox . . . . . . . . . . . . . . . . DOCUMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 639 C.8 AGGREGATION WITH INDEPENDENT WORKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 639

icon, and in the Language tab, the GNU Image Manipulation Program Generated by docbook2odf Page 8 of 421 G e n e r a t e d b y d o c b o o k 2 o d f desired language should be the first in alpha channel, has a range of possible values from 0 to 255; in computing terminology, a depth of 8 bits. Some digital cameras can produce image files with a depth of 16 bits per color channel. Gimp Options page of the Preferences dialog, but most people seem to be happy with the default value of 8 pixels. (Note that it is perfectly possible to snap to the grid even if the grid is not visible. It

a digital photo is usually 24 bits, which is having 8 bits in each channel. Some image formats, such as BMP and PNG, allow the use an additional 8 bits to store the alpha channel. Grayscale images images, having only one channel, usually have a colour depth of 8 bit. Also, Black and white images have a colour depth of 1 bit. It is very difficult to select a colour in the RGB Colour Space. Therefore components GIMP NOTES UNIT IV D e v e l o p e d B y - S a r o j J u n g h a r e Page 8 In GIMP, each image that you have open is displayed in its own separate window. We will begin with

击来 设置。（图中前景色是黑色） -------------------------------------------------------------------------------- 8 用 GIMP 图像编辑软件设计简单照片背景贺卡 了解了 GIMP 的用户界面后，我们将选好的照片在新建好的这个图像文件里打开。如下图， 在顶端的菜单里选择“文件”，并在下拉的菜单里选择“作为图层打开”： 图像编辑软件设计简单照片背景贺卡 同时下面的“工具选项区”会变成“缩放”工具的选项： 在右边的图片任意位置点击鼠标，可以发现“缩放”窗口被显示出来，并且右边的图片上显 示了网格，表示图片已经进入缩放模式： 插图 8: 照片进入缩放模式 首先我们要保证图片在缩放过程中长宽比保持不变，照片不会在缩放过程中被横向或纵向压 缩。要做到这点，可以在缩放窗口中找到一个“小链条”图标。 点击这个图标可以切换长宽比锁定状

manually segment two difficult images • Next lecture will cover the fundamentals of neural networks 8 XCT Image Segmentation

it at home: http://www.gimp.org/ Help and Tutorials: http://www.gimp.org/tutorials/ GIMP Basics - 8

image 04 Ctrl 5 Open recent image 05 Ctrl 6 Open recent image 06 Ctrl 7 Open recent image 07 Ctrl 8 Open recent image 08 Ctrl 9 Open recent image 09 Ctrl 0 Open recent image 10 Ctrl S Save image Shift

with 2 choices:  Pick a layer or guide  Move the active layer Josianne Mallia 8 Brief Notes on Introduction to Gimp Interface Layers