Class 9 Computer Science Photoshop Notes

Download CBSE Class 9 Computer Science Photoshop Notes in PDF format. All Revision notes for Class 9 Computer Science have been designed as per the latest syllabus and updated chapters given in your textbook for Computer Science in Standard 9. Our teachers have designed these concept notes for the benefit of Grade 9 students. You should use these chapter wise notes for revision on daily basis. These study notes can also be used for learning each chapter and its important and difficult topics or revision just before your exams to help you get better scores in upcoming examinations, You can also use Printable notes for Class 9 Computer Science for faster revision of difficult topics and get higher rank. After reading these notes also refer to MCQ questions for Class 9 Computer Science given our website

Photoshop Class 9 Computer Science Revision Notes

Class 9 Computer Science students should refer to the following concepts and notes for Photoshop in standard 9. These exam notes for Grade 9 Computer Science will be very useful for upcoming class tests and examinations and help you to score good marks

Photoshop Notes Class 9 Computer Science

PHOTOSHOP
INTRODUCTION

Photoshop is a software for image processing. It is widely used by professional photographers to edit, manipulate and recolour photographs and create special effects
draw objects, write text on them.
 
STARTING PHOTOSHOP
 
To start Photoshop, follow the given steps:
Step-1)   Click Start button – All Programs.
Step-2)    Click Adobe Photoshop.
 
TOOL PALETTE

The tools palette contains tools to draw, paint, and erase. There are four categories of tools in Photoshop’s Tools palette:
 Selection Tools
 Path, Text and Shape Tools
 Painting Tools
 View Tools
CBSE Class 9 Computer Science Photoshop Notes
CREATING A NEW FILE
 
To create a new Photoshop image file, follow the given steps:
Step-1) Click on File menu.
Step-2) Click on New option.
Step-3) In the New dialog box that appears, specify the details (Name, Size, Resolution, Background Contents, Color Mode) and click on OK button.
 
A new blank image file is created. Now, you can use the tools and create your own drawing.
 
SAVING FILE

To save your file follows the given steps:
 
Step-1) Click on File menu → Click on the save option → The Save As dialog box appears.
 
Step-2) Give the name to the file and Click on the Save button.
 
OPENING AN EXISTING FILE

Now you can open any existing file or any other saved image in Photoshop.
 
To open an image, follow the given steps:
 
Step-1) Click on File menu. Click on the open option.
Step-2) In the Open dialog box, select the file to open.
Step-3) Click Open button.
 
CLOSING A FILE

To close a Photoshop file, click File menu → close.
 
EXITING FROM PHOTOSHOP
 
To exit from Photoshop, click File menu → Exit.
 
USING PHOTOSHOP TOOLS

Marquee Tools

The Marquee tools are used to select any image.
 
To select an area of the image, follow the given steps:
 
Step-1) Open the image and right-click on Marquee Tool. Now, select one of the following shapes from the list.
 Rectangular Marquee Tool
 Elliptical Marquee Tool
 Single Row Marquee Tool
 Single Column Marquee Tool

Step-2) Drag the mouse over the image to get the selection.
 
Lasso Tools

The Lasso Tools are used to make Freehand, Polygon and Magnetic selection.
 
To select an area of the image, follow the given steps:
 
Step-1) Open the image and right-click on Lasso Tool. Now, select one of the following shapes from the list.
 Lasso Tool
 Polygon Lasso Tool
 Magnetic Lasso Tool
 
Step-2) Drag the mouse over the image to get the selection, and release the mouse when the image or part of the image is completely selected.
 
Move Tool

The Move Tool is used to move a selected image from one location to another.
 
To use Move Tool, follow the given steps:
 
Step-l) Open the image and select the part of the image using anyone of the selection tool. Here, it is Rectangular Marquee Tool.
 
Step-2) Click on the Move Tool.
 
Step-3) Place the mouse pointer on the image to move and drag the selected image to another location.
 
Magic Wand Tool

The Magic Wand Tool is used to select an adjacent area of the same colour in an image.
 
To use the Magic Wand Tool, follow the given steps:
 
Step-1) Open the image and click on the Magic Wand Tool. The shape of the mouse pointer changes to a Magic Wand.
 
Step-2) Click on any part of the image to select all adjacent areas of pixels having the same colour.
 
Crop Tool

Cropping is the process of removing some part of an image and to create focus on the remaining part.
 
To use the Crop Tool, follow the given steps:
 
Step-1) Click on the Crop Tool
Step-2) Drag over the part of the image you want to crop. Now, to complete the crop, press Enter key. You see the selected image gets cropped.
 
Brush Tool

The Brush Tool paints with smooth edges. To use Brush Tool, follow the given steps:
 
Step-l) Click the Brush Tool
 
Step-2) Choose Brush Preset (size, style) from Options bar.

Step-3) Click or drag over the image to draw strokes.

Eraser Tool

This tool is used to erase a part of an image. To erase, follow the given steps:

Step-1) Click on Eraser Tool and select the type of eraser from the list :

  • Eraser Tool
  • Background Eraser Tool
  • Magic Eraser Tool

Step-2) Click and drag the mouse over the image to erase.

Paint Bucket Tool

The Paint Bucket Tool is used to fill or paint an entire selection. To use Paint Bucket Tool, follow the given steps:

Step-l) Click on the Paint Bucket Tool.

Step-2) Choose the colour from Color Palette and click anywhere on the canvas to coat the canvas with the colour.

Type Tool

Type Tool is used to add text in a Photoshop file. To add text, follow the given steps:

Step-l) Click the Type Tool.

Step-2) Click inside the canvas and type the text. Once your text is entered, you can change the font style, size, colour, bold, underline, italics, etc. using the Options bar.

Retouching Tools

Tools that help in editing an image are referred as the Retouching tools. These tools can be used on the complete image or on a selected part of the image.

Let us discuss two commonly used Retouching tools.

Spot Healing Brush Tool

This tool helps to fix image imperfections such as scratches, blemishes, dark spots, etc. To use Spot Healing Brush Tool, follow the given steps:

Step-1) Open the file to be edited and select Spot Healing Brush Tool .

Step-2) Choose a brush size from the Options bar.

Step-3 ) Click over the spots to fix imperfections in the image .

Healing Brush Tool

This tool also helps to fix imperfections but is different from the Spot Healing Brush tool as it requires to make a selection or define a source point before using it.

To use Healing Brush Tool, follow the given steps:

Step-l) Open the file to be edited and select the Healing Brush Tool.

Step-2) Choose a brush size from the Options bar.

Step-3) Press Alt key and click on the image to define a source point.

Step-4) Click over the image to fix imperfections in the image.

Clone Stamp Tool

The Clone Stamp Tool is used to create a duplicate copy of one part of an image over another part of the same Image.

To use Clone Stamp Tool, follow the given steps:

Step-1) Open the image and select Clone Stamp Tool.

Step-2) Use Alt key and click to define a source point.

Step-3) Drag the mouse at the place where the clone is to be created.

COPYING AND PASTING SELECTION

Copy and Paste option is used to copy the selected part of the image to other location. To copy and paste, follow the given steps:

Step-1) Select a part of an image using any of the selection tool.

Step-2) Click Edit Menu à Copy option. Step-3) Create a new file using File à New. Step-4) Now, click Edit Menu à Paste option.

LAYER

Photoshop layers are like transparent sheets stacked on top of each other to create the final image. You can change one layer without affecting the other layers or the background of the image. Layers create larger files but separate portions of the image, therefore making the work easier.

The layer palette shows a small thumbnail view of image in the layers palette.

CREATING A NEW LAYER

A new layer is created when you paste any object in your in your image. To create a new layer, follow the given steps:

Step-1) Click the Layer menu, select New  click the Layer option. The New Layer dialog box appears.

Step-2) In the Name text box, type the desired name. Click OK.

RENAMING LAYER

To rename a layer, follow the given steps:

Step-1) Select the layer from Layers palette and click Layer Properties from the Layer menu

Step-2) In the dialog box that appears, type a new name for the layer and click OK.

DELETING A LAYER

To delete a layer, follow the given steps:

Step-1) Select the layer you want to delete from Layers palette and click Layer Menu à Delete à Layer option.

Step-2) In the confirmation dialog box that appears, click Yes.

HIDING AND SHOWING A LAYER

To hide a layer, click on the eye icon that is the foremost left column of the layers palette.

To show a layer, click in the leftmost column to bring back the eye icon. The order of the layers affect the image displayed.

MERGING LAYERS

Merging layers means to combine the visible layers into a single layer.

To merge different visible layers, click Layer menuà Merge Layers option.

FILTERS

Filters help to give special effects to the picture or selected portion of it.

Types of Filters

There are 11 main categories of filters in Photoshop:

 Artistic  Blur  Brush Strokes  Distort  Render  Stylize

 Noise  Sharpen  Texture  Pixelate  Sketch  Video

To apply a filter, follow the given steps:

Step-1) Open the image.

Step-2) Choose any category from Filter menu. If a dialog box appears, click OK to see the effect.

Filter Gallery

The Filter Gallery helps you to apply filters and view the thumbnail image of the change that appears, which you may accept by clicking OK.

Step-1) Click on Filter menu and choose Filter Gallery.

Step-2) Choose the filter type from the gallery.

Step-3) Click OK to apply the filter.

PROJECT WORK

Answer the following questions:

1. What is Photoshop?
2. What are retouching tool?
3. How do you hide a layer?
4. Write the steps to use healing brush tool?
5. How do you apply filter to an image?
6. Open an image of flowers and use the Magic Wand tool to select one flower.
 
Use this selection to make a bouquet of flower by pasting on new image file with black background.
 
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