Question about Computers & Internet

1 Answer

Adjust image brightness/contrast

Hello friends,

I am trying to adjust image brightness/contrast in HTML page using canvas tag. But i couldn't do it. Anybody send me full javascript coding using canvas tag to adjust brightness/contrast of an image.

thanks.

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Sorry dude, you can get it from net right, i found it in a website, just search.

cool

Posted on Sep 06, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

How do I adjust contrast?


There are Function Keys to do this.

from Troubleshooting section. Keyboard (if contrast and brightness function key)
http://tim.id.au/laptops/acer/aspire%203680%205570%205580.pdf

and Page 10 of the manual
Display Keep your display clean. • Keep your head at a higher level than the top edge of the display so your • eyes point downward when looking at the middle of the display. Adjust the display brightness and/or contrast to a comfortable level for • enhanced text readability and graphics clarity. Eliminate glare and reflections by: • placing your display in such a way that the side faces the window or • any light source minimizing room light by using drapes, shades or blinds • using a task light • changing the display's viewing angle • using a glare-reduction filter • using a display visor, such as a piece of cardboard extended from the • display's top front edge Avoid adjusting your display to an awkward viewing angle. • Avoid looking at bright light sources, such as open windows, for extended • periods of time.
http://www.manualslib.com/manual/205261/Acer-Aspire-3680.html?page=10&term=contrast

http://tim.id.au/laptops/acer/aspire%203680%205570%205580.pdf

Dec 27, 2015 | Acer Aspire 3680 Laptop

2 Answers

How to adjust contrast on dell 610


You can only adjust brightness. There is no contrast control.

Jan 17, 2014 | Dell Latitude D610 Laptop Computer -...

1 Answer

HOW TO SET BRIGHTNESS OF THE SCREEN?


Hi,

Dear User...

You can adjust the brightness and contrast of your monitor to improve the readability of text and to make digital pictures appear more like they'll look when printed.

To improve the results when adjusting the brightness and contrast settings for your display, use Display Color Calibration. (Display Color Calibration helps you adjust these color settings and others.) For more information about calibrating your display color in Windows, see Calibrate your display.

The way you adjust brightness and contrast varies and depends on your specific display.

Brightness and contrast buttons on the front of the monitor. Some monitors have brightness and contrast controls on the front and use the standard symbols shown in the following image.


On-screen menu. You can change the brightness and contrast settings for some displays by using an on-screen menu, and then setting the brightness and contrast in the resulting menu. Many times, you can view the on-screen menu by pressing a button-possibly labeled Menu-on the front of the monitor.



Thanks....

Feb 07, 2013 | Computers & Internet

1 Answer

Unable to reduce brightness windows7 ultimate hp1670


laptop ot desktop monitor ?

Adjust your monitor's brightness and contrast

You can adjust the brightness and contrast of your monitor to improve the readability of text and to make digital pictures appear more like they'll look when printed.


To improve the results when adjusting the brightness and contrast settings for your display, use Display Color Calibration. (Display Color Calibration helps you adjust these color settings and others.)

The way you adjust brightness and contrast varies and depends on your specific display.

Brightness and contrast buttons on the front of the monitor.


Some monitors have brightness and contrast controls on the front and use the standard symbols shown in the following image.

Brightness and contrast symbols

On-screen menu. You can change the brightness and contrast settings for some displays by using an on-screen menu, and then setting the brightness and contrast in the resulting menu. Many times, you can view the on-screen menu by pressing a button-possibly labeled Menu-on the front of the monitor.


Laptop display. Laptop displays don't have brightness or contrast buttons on the front.

For a majority of laptops, there isn't a control for setting the contrast.


However, you can set the brightness of many laptops by pressing and holding the Fn key, and then pressing a function key to decrease brightness ( ) or increase brightness ( ).

http://windows.microsoft.com/en-US/windows7/Calibrate-your-display#

When using Display Color Calibration on a laptop, set the display to the maximum brightness setting.


Adjusting brightness automatically using adaptive brightness

Adaptive brightness is a feature in Windows that uses a light sensor to automatically adjust the display brightness to match the lighting conditions in your computer's surroundings.


To use adaptive brightness, you must have light sensors installed and enabled on your computer.


To determine if your laptop or computer monitor supports adaptive brightness, look for the Enable adaptive brightness setting in Power Options (mentioned in the following procedure) or check the information that came with your computer.


To turn adaptive brightness on or off

Open Power Options by clicking the Start button , clicking Control Panel, clicking System and Security, and then clicking Power Options.


Under any plan, click Change plan settings.

Click Change advanced power settings.

In the list, expand Display, and then expand Enable adaptive brightness.


To turn adaptive brightness on or off when your computer is running on battery power, click On battery, and then, in the list, click On or Off.

To turn adaptive brightness on or off when your computer is plugged into an outlet, click Plugged in, and then, in the list, click On or Off.

Click Apply. Click OK.


hope this helps

Jul 26, 2012 | HP...

1 Answer

HOW DO I BRIGHTEN UP MY MONITOR SCREEN?


hi,
you can adjust the contrast and brightness of the screen accordingly using the following instructions. Please select the right combination of brightness and contrast according to your desire.
  • Please check out controls in the bottom of your monitor, below the scree. I have provided the image below for your reference.
  • 2c2dd1f.jpg
  • In this the fourth option is OSD menu. Please click on it and you will scoll down to options .
  • you can see options called "brightness and contrast". I have added picture for this too!
9b04c60.jpgOnce you go that page,use the menu to enter! then use the 2nd and 3rd button to adjust the brightness. Now your job is done.Please click on 1st button to exit. If you need more assistance in this, please write back to us. Please rate my solution as helpful!


Apr 02, 2010 | Acer AL1715 17" LCD Monitor

1 Answer

Brightness/Contrast Adjustment


try going to the setup screen button left of adjustments







try going to the set up menu on the left of the buttons come down to the slider control just above the information icon then go across to color reset hope this helps regards Jim







Mar 12, 2009 | Samsung SyncMaster 2253BW LCD Monitor

2 Answers

VA721/Windows 2000 - contrast/brightness settings grayed out


The monitor is probably set to sRGB under "color adjust".

Change it to 6500K, which is default, and you should be able to adjust brightness and contrast.

Jan 01, 2009 | ViewSonic VA721 17" LCD Monitor

1 Answer

Pictures appear to be darker than original in print outs.


You can make several adjustments to improve your images such as lightening dark areas, changing the exposure, sharpening blurred edges, and changing the brightness and contrast.
  • Exposure adjusts the overall intensity of light in an image.
  • Adaptive Lighting improves only the dark areas in an image without affecting the bright areas.
  • Brightness adjusts the amount of light in colors ranging from light to dark.
  • Contrast adjusts the difference in brightness between light and dark areas of an image.
  • Sharpness helps define edges and the smoothness of texture in an image. Use this tool to make a blurred image appear more focused.
Adjusting the image Follow the steps below to make adjustments:
  1. Click the View tab and select the image you want to edit by either clicking the image, or by clicking the small box at the bottom left corner of the image. Figure 1: Select the image c00603524.gif
  2. Click the Edit tab and then click the Advanced tab.
  3. On the Advanced tools tab, click Adjust Image .
  4. Select an adjustment from the list on the left. Figure 2: Adjusting the brightness c00603525.gif
    • The Exposure adjustment is automatically applied when the Adjust Image tool opens. Eight variations of the image are displayed on the left. The current image is displayed in the center. Each image represents a different level of adjustment. When you move the pointer over any of the images on the left, a large version of the image is displayed. Use Preferences to turn this large image preview on or off and to set the timing for the display.
    • If you want to use a different adjustment tool, select Adaptive Lighting , Brightness , Contrast , or Sharpness from the list.
  5. Select one of the images on the left.
  6. Do one of the following:
    • Click Accept to accept all changes and exit from the Color Toolkit.
    • Click Cancel to discard all changes and exit from the Color Toolkit.
  7. If you have finished modifying the image, do one of the following to save your changes:
    • Click Save to overwrite the original image.
    • Click Save As to save the modified image with a different name.

Aug 25, 2008 | HP Photosmart D7160 InkJet Printer

1 Answer

Image adjustment functions


SHARPNESS - The function is to adjust sharpness of capturing images. CONTRAST - The function is to adjust contrast (distinction between light and dark) of capturing images. SATURATION - The function is to set color depth of capturing images. GRADATION - In this function, you can select the brightness of an entire image. It is suitable when you want to add a brighter effect to a bright object (Hi Key) and a darker effect to a dark object (Low Key).

Sep 04, 2005 | Olympus EVOLT E-300 Digital Camera

Not finding what you are looking for?
Computers & Internet Logo

Related Topics:

226 people viewed this question

Ask a Question

Usually answered in minutes!

Top Computers & Internet Experts

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

kakima

Level 3 Expert

101551 Answers

David Payne
David Payne

Level 3 Expert

14160 Answers

Are you a Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...