Lecture Graphic editor Appointment and main functions. Graphic editor, appointment, functions. The main features of G.

Theme lesson:Graphic editors and their purpose. Basic Graphic Editor Tools .

Type of lesson: Combined

Objectives lesson:

Educational:

To acquaint students with a graphic editor, to teach the basic instruments of the graphic editor: "Pencil", "Brush", "Line", "Curve", "Rectangle", "Circle", "Eraser", "Fill".

Developing:

- the development of ability to independently learning;

- development of attention

- visual memory

- logical thinking;

Educational:

responsible attitude to information and working with it;

learning interconnection skills;

the development of the creative activity of students.

Lesson plan

1. Org. moment

2. Actualization

Fizkultminutka

6. Fastening the material.

During the classes

1. Org. moment

Hello guys. Check if everything prepared for a lesson.

2. Actualization

At last lessons, when we worked with the Mo Word program, we learned to draw drawings with the help of autofigur, but to create a complex image from the bottom is quite difficult. Much more features for drawing can give us a graphic editor Paint.

3. Explanation of the new material

Today we learn what a graphic editor and consider it opportunities, also apply the knowledge gained in practice.

Graphic editor is a program to create and change the image.

There are many different graphic editors. They are classified by type of graphics. Main types: raster and vector.

The raster image consists of pixels.

The vector image consists of geometric primitives.

We will work in a raster graphic editor Paint.

Consider the graphic interface editor Paint..

If any panel is missing, you need to go to the View menu and click on the off panel.

Consider Paint tools:

To work in Paint, you must use the following drawing algorithm:

Fizkultminutka

Practical work on the computer

Draw a butterfly

6. Fastening the material.

What is a graphic editor?

What Paint tools do you know?

Algorithm drawing

How to draw a curve?

7. D. s. To secure practical skills, draw fig. "Butterflies" and send it to the post of school.

· For image processing on a computer used special programs - graphic editor. Graphics editor- This is a program for creating, editing and viewing graphic images. Graphic editors can be divided into two categories: raster and vector.

· Raster graphics editors.Raster graphics editors are best tool Photo processing and drawings, since raster images provide high accuracy of gradation transmission of colors and halftone. Among raster graphics editors there are simple, for example standard application Paint, and powerful professional graphic systems, such as Adobe Photoshop..

· The bitmap image is stored using points of various colors (pixels) that form rows and columns. Any pixel has a fixed position and color. The storage of each pixel requires some number of bits of information, which depends on the number of colors in the image.

· The quality of the bitmap is determined by the size of the image (the number of pixels horizontally and vertical) and the number of colors that pixels can take.

· Raster images are very sensitive to scaling (increasing or decreasing). When the raster image decreases, several adjacent points are converted into one, so the intelligibility of small parts of the image is lost. When enlarging the image, the size of each point increases and the step effect appears, which is visible to the naked eye.

· Vector graphic editors.Vector graphic images are the optimal means for storing high-precision graphic objects (drawings, schemes, etc.). For which it matters the presence of clear and clear contours. With vector graphics you encounter when you work with computer drawing systems and automated design, With three-dimensional graphics processing programs.

· Vector graphic editors include a graphic editor built into text editor Word. Among professional vector graphic Systems The most common CorelDRAW and Adobe Illustrator.

· Vector images Forms from objects (dot, line, circle, etc.), which are stored in the memory of the computer in the form of graphic primitives and describing their mathematical formulas.

· For example, a graphic primitive point is given by its coordinates (x, y), the line - the start coordinates (xi, u1) and the end (x2, y2), the circle - the coordinates of the center (x, y) and the radius (K), the rectangle - the value sides and coordinates of the left top corner (XL, Y1) and the right lower corner (x2, y2), etc. For each primitive, color is also assigned.

· Dignity vector graphic It is that files that store vector graphic images have a relatively small volume. It is also important that vector graphic images can be enlarged or reduced without loss of quality.

· Graphic editors toolbar.Graphic editors have a set of tools for creating or drawing the simplest graphic objects: a straight line, curve, rectangle, ellipse, polygon, etc. After selecting an object on the toolbar, it can be painted anywhere in the editor window.

· Allocating tools.In graphic editors over the elements of the image, various operations are possible: copying, moving, deleting, rotation, size change, etc. To perform any operation on the object, it must first be highlighted.

· To highlight objects in a raster graphic editor, there are usually two tools: the release of the rectangular area and the allocation of an arbitrary region. The selection procedure is similar to the drawing procedure.

· Selecting objects in the vector editor is carried out using the allocation of an object (on the toolbar is displayed arrow). To select an object, select the selection tool and click on any object in the figure.

· Picture Editing Toolsallow you to make changes to the drawing: to wash it parts, change colors, etc. To erase the image in raster graphics editors, use the Eraser tool, which removes the image fragments (pixels), while the size of the plant can be changed.

· In vector editors, image editing is possible only by removing objects included in the image, entirely. To do this, you must first select the object, and then perform the operation to cut.

· Color change operation can be implemented using the palette menu containing a set of colors used when creating or drawing objects.

· Text tools allow you to add text to drawing and format it.

· In the raster editors, the instrument is the inscription (the letter A on the toolbar) creates text areas in the figures. By installing the cursor anywhere in the text area, you can enter text. Text formatting is performed using the text attribute panel.

· In vector editors, you can also create text areas for entering and formatting text. In addition, the inscriptions to the drawings are introduced by the so-called callouts of various forms.

· Scaling tools in raster graphics editors make it possible to increase or decrease the scope of the object presentation on the screen without affecting its real dimensions. Usually such a tool is called a magnifying glass. In vector graphic editors it is easy to change the real dimensions of the object using the mouse.

· Formats of graphic files

· Formats of graphic files define the storage method in the file (raster or vector), as well as the storage form (used by the compression algorithm).

· Compression is applied to raster graphic files, as they usually have a fairly large volume. Compressing graphic files differs from their archiving using archivers programs. By the fact that the compression algorithm is included in the format of the graphic file.

· Some formats of graphic files are universal, as they can be processed by most graphic editors. Some image processing programs use original formats that recognize only the most creating program.

· Consider some formats of graphic files:

· BMP - universal raster graphics format in Windows.

· GIF - format of raster graphic files for various OS. Used to accommodate graphic images on the Internet.

· JPEG - format of raster graphic files, which uses effective compression algorithm (loss). Used to accommodate graphic images on the Internet.

· WMF - universal format Vector graphic files for Windows applications.

· CDR - the original format of vector graphic files, is used in the CorelDRAW image processing system.

Special programs are used to process images on the computer - graphic editors. Graphics editor - This is a program for creating, editing and viewing graphic images. Graphic editors can be divided into two categories: raster and vector.

Raster graphics editors. Raster graphics editors are the best means of processing photos and drawings, since raster images provide high accuracy of the gradation transmission of colors and halftone. Among raster graphics editors there are simple, such as the standard Paint application, and powerful professional graphic systems, such as Adobe Photoshop.

The bitmap image is stored using points of various colors (pixels) that form rows and columns. Any pixel has a fixed position and color. The storage of each pixel requires some number of bits of information, which depends on the number of colors in the image.

The quality of the bitmap is determined by the size of the image (the number of pixels horizontally and vertical) and the number of colors that pixels can receive.

Vector graphic editors. Vector graphic images are the optimal tool for storing high-precision graphic objects (drawings, diagrams, etc.). For which it matters the presence of clear and clear contours. With vector graphics you encounter when you work with computer drawing and automated design systems, with three-dimensional graphics processing programs.

Vector graphic editors include a graphic editor embedded in Word text editor. Among professional vector graphics systems are the most common CorelDRAW and Adobe Illustrator.

Vector images are formed from objects (point, line, circle, etc.), which are stored in the computer's memory in the form of graphic primitives and describing their mathematical formulas.

For example, a graphical primitive point is given by its coordinates (x, y), the line - the start coordinates (xi, u1) and the end (x2, y2), the circle - the coordinates of the center (X, Y) and the radius (K), the rectangle - the sides and the coordinates of the left upper angle (XL, Y1) and the lower corner (X2, Y2), etc., color is also assigned for each primulation.

The advantage of vector graphics is that files that store vector graphic images have a relatively small volume. It is also important that vector graphic images can be enlarged or reduced without loss of quality.

Allocating tools. In graphic editors over the elements of the image, various operations are possible: copying, moving, deleting, rotation, size change, etc. To perform any operation on the object, it must first be highlighted.

To highlight objects in a raster graphic editor, two tools are usually available: the release of the rectangular region and the allocation of an arbitrary area. The selection procedure is similar to the drawing procedure.

The selection of objects in the vector editor is carried out using the Select Option tool (on the toolbar is displayed by an arrow). To select an object, select the selection tool and click on any object in the figure.

Picture Editing Tools allow you to make changes to the drawing: to wash it parts, change colors, etc. To erase the image in raster graphics editors, use the Eraser tool, which removes the image fragments (pixels), while the size of the plant can be changed.

In vector editors, image editing is possible only by removing objects included in the image, entirely. To do this, you must first select the object, and then perform the operation to cut.

The color change operation can be implemented using the palette menu containing a set of colors used when creating or drawing objects.

Text tools allow you to add text to drawing and format it.

In vector editors, you can also create text areas for entering and formatting text. In addition, the inscriptions to the drawings are introduced by the so-called callouts of various forms.

Scaling tools in raster graphics editors make it possible to increase or decrease the scope of the object presentation on the screen without affecting its real dimensions. Usually such a tool is called a magnifying glass. In vector graphic editors it is easy to change the real dimensions of the object using the mouse.

Formats of graphic files

Formats of graphic files define the information storage method in the file (raster or vector), as well as the form of information storage (used by the compression algorithm).

Compression is applied to raster graphic files, as they have usually quite large volume. Compressing graphic files differs from their archiving using archivers programs. By the fact that the compression algorithm is included in the format of the graphic file.

Some formats of graphic files are universal, as they can be processed by most graphic editors. Some image processing programs use original formats that recognize only the most creating program.

Consider some formats of graphic files:

BMP - Universal raster graphics format in Windows.

GIF - format of raster graphic files for various OS. Used to accommodate graphic images on the Internet.

JPEG - format of raster graphic files, which uses effective compression algorithm (loss). Used to accommodate graphic images on the Internet.

WMF - universal format vector graphic files for Windows applications.

CDR is the original format of vector graphic files, used in the CorelDRAW image processing system.

The graphic editor is a special program designed to view and on the computer. In addition, this software allows you to independently draw pictures. For the first time, the presentation of data in graphical form on the computer was implemented in the 50s of the last century. It was at the time that were developed graphic programs For computer used in military and scientific fields. Currently there are three main varieties of graphic editors - raster, vector and hybrid.

The main functions of graphic editors

The main functions of graphic editors can be attributed:

The editor can be created both manually and using special tools (stamps, curves, etc.).
Convert ready image. Photos and pictures can be moved, rotated and scaling. Also, such programs provide the ability to work with individual parts of the image. For example, such a function is usually available as the removal of the image fragment. The pictures can also be copied both in both parts, and also glue and color.
Enter text in the picture. At the same time, it is usually possible to use different fonts - both modern and stylized "under the antiquity".
Work with the external devices. Drawn or edited image, if desired, can be printed on the printer without leaving the program. Of course, the file can be saved to any folder on a hard or external disk.

Raster editors

The raster graphic editor is a tool designed primarily for processing ready-made images. it software Guarantees the most accurate transmission of tones and halftone. It consists of a variety of points called pixels. Raster pictures are characterized by maximum realism. The quality is determined by the number of pixels, as well as their ability to transmit color. The more points of different shades contain the image, the more clear. Raster graphics editors have one small drawback. Free scaling of images with their use without loss of quality is impossible. The fact is that each picture contains a strictly fixed number of points. Therefore, let's say, with an increase in the image, the point will simply become more. That is, the picture will lose clarity.

Most often, the raster image is maintained in however, most editors also support such common formats as BMP, GIF, TIF, etc.

Vector graphic editors

The vector graphic editor is a program designed to create high accuracy images. It may be, for example, drawings or schemes. Such pictures differ much more clarity than raster. All elements are described mathematically. Therefore, an increase in such a picture can be performed absolutely without loss of clarity. However, such a realistic image, as a raster editor, can not provide vector.

Graphic graphic editors can not only perform drawings manually, but also convert raster images into circuits. To do this, use the so-called trace method. Thus, for example, the usual photo can be converted into a stylish poster. Files in which vector drawings are saved, compared with raster files have a small volume.

Hybrid graphic editors

In a hybrid graphical editor to create an image, you can use both raster and vector tools. The main disadvantage of such programs can be called complexity in use. Therefore, they still have not received particularly widespread.

Raster editor Paint.

So, a graphic editor - what is it? This is a very convenient software, an indispensable tool in the work of artists, photojournalists, engineers, architects, etc. Today there are editors as very complex, intended for professionals, as well as simpler users used by ordinary people. The latter can also be attributed to the Paint - one-square raster editor existing on almost every home computer. Most of the window of this program occupies the area of \u200b\u200bthe drawing. Paint is located on the left. The program allows you to carry out free drawing, scale the pictures, change their color, erase unnecessary parts, and also almost one click to cancel all these actions.

Raster editor Adobe Photoshop

Like all raster graphics editors, Adobe Photoshop is designed to work, first of all, with digital photos. This program was developed as a tool for professionals, but very quickly won popularity and lovers. The main distinctive feature is a truly unlimited list of instrumentation features. With this program, it is easy to cut separate parts of images, create masks, change the proportions of pictures and their individual parts. If you wish to a photo or picture, you can use a variety of effects, change their color, brightness, saturation, contrast, etc.

Vector editor Corel Draw

Working instruments of the Corel Draw graphics editor are, first of all, geometric shapes that can be converted to any other images as well as curves. With the use of the latter, it is easy to bring to perfect hand-drawn picture. Paint the resulting images can be the most different methods. If desired, it is allowed to use both the colors and different kinds of patterns and textures.

Drawings in the Corel Draw program are created on the work sheet located in the center of the window. The toolbar is located in the left side.

The graphic editor is a thing that may be useful in the most different situations. Learning to use at least the easiest, of course, is worth it. With this software, you can turn any inexperial photo into a real work of art, make a caricature or draw an interesting picture and send it to friends.

Special programs are used to process images on the computer - graphic editors. A graphic editor is a program for creating, editing and viewing graphic images. Graphic editors can be divided into two categories: raster and vector.

Raster graphics editors. Raster graphics editors are the best means of processing photos and drawings, since raster images provide high accuracy of the gradation transmission of colors and halftone. Among the raster graphics editors there are simple, such as the standard Paint application, and powerful professional graphic systems, such as Adobe Photoshop and CorelPhoto-Paint.

The quality of the bitmap is determined by the size of the image (the number of pixels horizontally and vertical) and the number of colors that pixels can receive.

Raster images are very sensitive to scaling (increasing or decreasing). When the raster image decreases, several adjacent points are converted into one, so the intelligibility of small parts of the image is lost. When enlarging the image, the size of each point increases and the step effect appears, which is visible to the naked eye. Vector graphic editors. Vector graphic images are an optimal tool for storing high-precision graphic objects (drawings, schemes, etc.) for which the presence of clear and clear contours is important. With vector graphics you encounter when you work with computer drawing and automated design systems, with three-dimensional graphics processing programs.

Vector graphic editors include a graphic editor embedded in Word text editor. Among professional vector graphics systems are the most common CorelDRAW and Adobe Illustrator.

Vector images are formed from objects (point, line, circle, etc.), which are stored in the computer's memory in the form of graphic primitives and describing their mathematical formulas.

For example, a graphic primitive point is given by its coordinates (x, y), the line - the start coordinates (XI, U1) and the end (X2, U2), the circle - the coordinates of the center (x, y) and the radius (s), the rectangle - the sides of the parties and the coordinates of the left upper angle (XI, U1) and the lower corner (X2, U2), etc., color is also assigned for each primulation.

The prehisture of vector graphics is that the files that store vector graphic images have a relatively small volume. It is also important that vector graphic images can be enlarged or reduced without loss of quality.

Graphic editors toolbar. Graphic editors have a set of tools for creating or drawing the simplest graphic objects: a straight line, curve, rectangle, ellipse, polygon, etc. After selecting an object on the toolbar, it can be painted anywhere in the editor window. Allocating tools. In graphic editors over the elements of the image, various operations are possible: copying, moving, deleting, rotation, size change, etc. To perform any operation on the object, it must first be highlighted.

Figure editing tools allow you to make changes to the drawing: erase its parts, change colors, etc. To erase the image in raster graphics editors, use an eraser tool that removes image fragments (pixels), while the size of the plant can be changed.

In vector editors, image editing is possible only by removing objects included in the image, entirely. To do this, you must first select the object, and then perform the operation to cut.

The color change operation can be implemented using the palette menu containing a set of colors used when creating or drawing objects.

Text tools allow you to add text to drawing and format it.

In raster editors, the instrument is an inscription (the letter A on the toolbar) creates text areas in the drawings. By installing the cursor anywhere in the text area, you can enter text. Text formatting is performed using the text attribute panel. In vector editors, you can also create text areas for entering and formatting text. In addition, the inscriptions to the drawings are introduced by the so-called callouts of various forms.

In vector graphic editors it is easy to change the real dimensions of the object using the mouse.