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Geeks Tutorials

Educational Tutorials For Geeks

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Removing the Background of an Image with Background Eraser Tool

Many Photoshop users opt for some complicated methods when it comes to erasing the backgrounds of the images. Well there is a much easier and simpler way of doing the same task and that is by using the Background Eraser Tool. This tool has got automatic edge detection as well as selection feathering features which has enhanced the the background erasing to a great degree. You can also learn about Putting Text in Your AutoCAD Drawing.

In order to change the background of an image by using Background Eraser tool you need to follow these simple steps.

  • 1st of all you need to open the photo whose background you want to remove.
  • Now select the Background Eraser tool from the ToolBox. (You can also press Shift+E for selecting the tool.)
  • After selecting this tool your mouse cursor will change into a circle with a crosshair in the middle. Right click anywhere in the image for opening up the brush options of the tool.
  • In the option box you have to set the hardness level to 100%.
  • Keep the spacing fairly low like from 1 to 50%.
  • From the top panel choose the Sampling Once option which means we will only sample the color once and erase the major part of the image with it.
  • Keep the Limits at Contiguous and the Tolerance to 50%.
  • Now start erasing the background by holding the left mouse button and dragging it around for erasing.
  • If you want to remove the background which is mixed with the image like erasing visible sky between the leaves of a tree then set the Limits option to Discontiguous.
  • If you are getting problems by changing the Tolerance levels just turn on the Protect Foreground Color option.

Putting Text into Your AutoCAD Drawing

In this tutorial you will learn how to put text single line text in your drawing. For putting the text into your drawing you can use either Dtext command and Ddedit command.

You can also learn about the Role of Keyboard Function Keys in AutoCAD.

Dtext Command:

This command places individual lines of text in a drawing and also lets you see every letter being typed. You can also enter multiple lines of text without exiting the dtext command.By pressing Space Bar it will put a space between letters as well as words.

In order to use Dtext command you need to follow these steps.

  • 1st of all type in: DTEXT and then press ENTER from your keyboard.
  • Now you need to define the starting point of text and for that you to click on the point where you want your text to be started.
  • Now you have to specify height and for that you need to type in the height which you want your text to be and after that you need to press ENTER from your keyboard.
  • Now is the time to specify the rotational angle of the text and if you want your text to be in horizontal direction than type in: 0 and then press Enter.
  • Now comes the stage where you have to type in the required text and then press ENTER from your keyboard. If you wish to add more lines press Enter from your keyboard again.
  • When you are done typing the text you need to press ENTER key from keyboard twice.

DDedit Command:

You can also use DDedit for entering the text into your drawings and for that you need to follow these simple steps.

  • 1st of all you need to type in: DDedit and then press ENTER.
  • Now select the annotation object with the mouse and then select the line of text which you wish to edit.
  • Noe the EDIT TEXT box will be opened displaying the text which was selected in step 2.
  • Using the keyboard edit the text in the box. When you are done click OK in order to save the changes.

Role of Keyboard Function Keys in AutoCAD

AutoCAD is an amazing application which is helping the engineers and architects to create engineering and architectural design for decades now. AutoCAD has enhanced the productivity, accuracy and reliability to a great degree. In this tutorial we will learn about the role of function keys in AutoCAD. You can also learn about Using Osnap Command in AutoCAD.

  • ESC key: ESC key is the Cancel command key. Whenever you need to switch between two commands you need to press ESC key in order to cancel the currently selected command.
  • F1: The function key will let you access the help dialog box of AutoCAD. So whenever you need any help from AutoCAD just press F1 key.
  • F2: This function key upon pressing will open the AutoCAD text window. Through this window you can scroll through the history of previously used commands.
  • F3: This function key will turn the currently running osnap ON or OFF.
  • F4: This function key will let you turn the Tablet ON or OFF and you may never use this key.
  • F5: This function key will let you switch between top, front and right ISOPLANES.
  • F6: This function key will turn the coordinate readout located at the lower left of the screen ON or OFF.
  • F7: This function key turn the Grid display ON or OFF.
  • F8: This function key will turn ORTHO ON or OFF. ORTHO command is used with the combination of LINE command for creating straight horizontal as well as vertical lines.
  • F9: This function key will turn the SNAP ON or OFF.

Using Osnap Command in AutoCAD

While working with AutoCAD you need to be as accurate as possible and for this you have to use Object Snap tool. It is a very handy tool present in AutoCAD which will increase the productivity, accuracy and performance. Object Snap term refers to the ability of the cursor to snap exactly on the specific point of an object like of you want to pick the center of a circle exactly at the intersection of two lines chances are you may miss the intersection point but with Osnap command you can pick the intersection point easily. Osnap has various different commands which include Osnap ENDPOINT, Osnap INTERSECTION, Osnap NEAREST, Osnap MIDPOINT, Osnap TANGENT and Osnap CENTER. You can also learn How to Put Chamfer and Fillet between Two Connecting Lines in AutoCAD.

Osnap ENDPOINT:

In order to draw Osnap Endpoint follow these steps.

  • 1st of all draw two horizontal lines which should be a short distance away from each other.
  • Now click on LINE icon from the Draw toolbar.
  • Now specify the 1st point. Move the cursor towards the lower right endpoint of the bottom line and then click down the moment you see a yellow osnap endpoint box with a little tooltip saying endpoint.
  • Now move the cursor up to the endpoint of the line above and click down the moment you see a yellow osnap endpoint box.
  • Now press ESC key from the keyboard to cancel the selection.

Osnap INTERSECTION:

For applying Osnap INTERSECTION command you need to follow these simple steps.

  • 1st of all draw two overlapping lines.
  • Now click on the LINE icon in the draw toolbar.
  • Now specify the 1st point and move your cursor over the intersection of the intersection line and click down the moment you see a yellow X at the intersection.
  • Now move the cursor out a little distance and then click. After this clickdown to end the line.
  • Now press ESC key from keyboard to cancel the command.

Osnap NEAREST:

For using this command follow these steps.

  • 1st of all draw a horizontal line of any distance.
  • Click on the LINE icon.
  • Specify the 1st point. Move the cursor over the horizontal line until you see a yellow hour glass.
  • Click down when you see the yellow hour glass.
  • Move the cursor up a little bit and click down.
  • Press ESC key from your keyboard to end the line.

Osnap MIDPOINT

For drawing osnap midpoint follow these steps.

  • Draw a horizontal line of any length.
  • Now click on the LINE icon from the draw toolbar.
  • Now specify the 1st point. Move the cursor along the horizontal line till you see a yellow triangle.
  • Click down when you see the yellow osnap midpoint triangle.
  • Now move the cursor up a little bit and click down to end the line.
  • Press the ESC key from the keyboard to cancel.

Osnap TANGENT:

For using Osnap TANGENT command follow these steps.

  • 1st of all draw two circles of any diameter.
  • Now click on the LINE icon.
  • Now specify the 1st point and type in: TAN after this press Enter.
  • Now move the cursor over the circle on the right until you see a yellow osnap DEFERRED TANGENT point and then click down.
  • Specify the 2nd point and type in: TAN and then press Enter.
  • Now move the cursor over the circle on the other side until you see a yellow osnap DEFERRED TANGENT point and then click down.
  • A line will be drawn tangent between two circles.

Putting a Chamfer or Fillet between Two Connecting Lines in AutoCAD

AutoCAD is a leading tool for creating some stellar engineering drawings. With AutoCAD you can add Chamfer as well as Fillet into your drawing. Chamfer is a transitional edge between two adjoining faces of an object and this edge is usually of 45° between the two faces. On the other hand a Fillet is the rounding of of an interior as well as exterior corners of a part design. In this tutorial you will learn how to put a chamfer or a fillet between two connecting lines. You can also learn about Sending SMS Messages with Cortana in Windows 10.

Putting a Chamfer between two connecting lines:

In order to put chamfer between two adjoining lines you need to follow these steps.

  • 1st of all you need to draw a horizontal line of 1″ and a vertical line of 1″ length. (1″= 1 inch)
  • Both these lines should be joined at the endpoints.
  • Now click on the CHAMFER icon from the Edit toolbar.
  • Now you need to select the 1st line and then type in D and then press Enter. (Typing D is for defining the the distance of the chamfer.)
  • Now specify the 1st chamfer distance and type in: 20 and after this you have to press Enter.
  • Now specify the 2nd chamfer distance and type in: 20 and after this you have to press Enter.
  • Now select the 1st line (Select the horizontal line from near the endpoint.)
  • Now select the 2nd line (Select the vertical line from near the endpoint.)

If the distance between these two lines is same than the chamfer angle will always be 45° and if you want it to be other than 45° than specify different lengths for horizontal and vertical lines.

Putting a Fillet between two Connecting Lines.

Follow these simple steps in order to put a fillet between two adjoining lines.

  • 1st of all you need to draw a horizontal as well as a vertical line of 1″ length.
  • Now click on FILLET icon in the Edit Toolbar.
  • Now select the 1st object and type in R (for setting the fillet radius) and after that press Enter.
  • Now is the time to specify the radius of the fillet and for that you need to type in a value e.g. 20.
  • Select the 1st object in this case select the horizontal line near the endpoint.
  • Select the 2nd object in this case select the vertical line near the endpoint.

You will notice that a fillet has been generated between the two lines with no more sharp edges.

Sending SMS Messages With Cortana on Windows 10

The Windows 10 Anniversary Update has given Cortana some very impressive new abilities. Among many abilities it has one is to send/receive SMS text messages from an Android or Windows Phone. Your personal assistant will send SMS for you with just few simple keystrokes or with your voice. But 1st of all you need to set it up. For sending SMS from your Windows 10 you need to follow these steps.

Setup on Android:

  • 1st of all you need to download Cortana for Android from Google Play Store into your phone.
  • Now you will notice a hamburger menu at the top-right corner. You need to tap it.
  • Now after clicking the hamburger menu you have to select Settings.
  • Now is the time to select Sync Notifications.
  • In the Sync Notification menu you need to turn ON Missed Call notifications, Incoming message notifications and App notifications sync.

Setting Up Windows 10:

  • 1st of all you need to click Settings in Cortana.
  • Now you need to turn ON “Send notification between devices.”

Sending an SMS:

Now comes the fun part that is sending SMS and for that follow these steps.

  • 1st of all you need to click on Cortana.
  • Now either say Text (NAME) or type SMS(NAME) to start sending messages. (Remember you can send to people which are in your contact list in Windows 10.)
  • Now dictate or type the message which you want to send.
  • Say “Send” or click “Send” in order to send your message.

With these simple steps you can send SMS to anyone in your contact list easily. You can also learn about Changing the Screen Resolution in Windows 10.

Changing the Screen Resolution in Windows 10

Screen Resolution, also known as display modes of computer monitor or laptop is the number of pixels in each dimension which can be displayed. Screen Resolution is generally quoted as width x height with the units in pixels like 1024 x 768. In this example width of the resolution is 1024 pixels and height is 768 pixels. In Windows 10 when you are required to change the display resolution setting it is an easy affair. You can also learn How to Edit Photos to Fit Your Display in Windows 10. If you are looking for a sharper resolution on your laptop which defaults to a lower option or if you need to change it back to the recommended size from a lesser option no worries just follow these simple steps.

  • 1st of all you need to click on the Start button.
  • When Start menu option is opened you will notice three icon on the bottom left corner right above the Start menu icon. Select the Settings icon.
  • This will open Setting window where you need to select System.
  • Now click Advanced display settings.
  • Here you can change the size of the text, apps by clicking the slider and 150% is recommended.
  • Change the Orientation to Landscape.
  • Then there is another slider for adjusting brightness level and you have to adjust it according to your preferences and then click on Apply button.
  • Now you need to click on the menu under Resolution.
  • Set the Resolution to 1920×1080 and then click Apply.
  • Now you need to click Apply.

With these simple steps you have successfully changed the display resolution.

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