How To Work With Image And Pixels
Feb 22, 2010how can i get a full code or full information how to work with image and pixels i want to work with image by pixels as integer number not as color?
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Saving A Forms Position (in Pixels) And Setting An Work Area From It
Dec 4, 2011I am trying to make a program that allows me to operate a program while I am not around (kind of like a bot) because I need to move alot of things and do the same motion over and over.
So in my program's settings I have made a form that is transparent that I want to set my working area with (i wont be resizing the form, it's size is "975, 575") and save the forms Top, Left, Bottom, Right positions so I can create a macro for my mouse to click.
how to save a forms position on the screen? So I can use it to set a working area?
I just want to save its current location to 4 variables
Pixel Counter - Count The Black Pixels The Grey Pixels The More Grey Pixels
Jul 27, 2009I'm trying to make a -what i thought would be simple app.My intention was to build program that:1) i'd provide a grayscale image2) the program would count the black pixels the grey pixels the more grey pixels etc. (the hue) and the white3) would make the percentage sum of all pixels, that is: 300.000 black pixels (rgb 0 0 0) etc. given that 0 is the black, 100 the white. e.g a simple grayscale image is 55.2 white
This was my way and i don't think that is useful:
First of a button to convert the image to greyscale:
Dim bm as new Bitmap(source.Width,source.Height)
Dim x
Dim y
[CODE]...
Secondly, -and that's the stupid way- i did -or better i wanted to do- this: i put the code to dynamically create labels, each label having the colour of a pixel as background colour and as text the colour converted to rgb
The third step which i intended to do (i couldn't get pas two) was to sum up the labels etc.
How To Get Pixels Of Image
Nov 11, 2011How can we get the pixels of an image in a fast way?
View 1 RepliesHow To Remove Groups Of Pixels From Image
Nov 22, 2010I am looking to remove groups of pixels that are less than 10x10 in size. The pixels are generated from scanned fax reports and are solid black, so they should be able to weed out easily. Our fax machine is rather old, and it generates random block dots along our documents. In other words, I have several images with random solid black dots that need to be removed.
View 4 RepliesMake Transparent All Pixels In One Image?
May 28, 2012what would be the fastest (best) way to make transparent all pixels in one image that are white on other image?
Let's say that have 2 transparent images (.png) and want to delete some portion of the first image. Pixels to be deleted (made transparent) are defined as white on the other image (some kind of deleting mask).
Map The Location Of All The Back Pixels In An Image?
Jun 9, 2011I need to map the location of all the back pixels in an image into some kind of structure. The program later uses the structure to select a random pixel location. It then removes the location, to prevent it being used again. The problem is, there is a huge number of black pixels (close to 40,000) so an ordinary array takes forever to search for and eliminate the "used" pixels. Is there some other "Faster" data structure?
View 3 RepliesSave/change Pixels Of An Image?
Oct 14, 2009I have an Image object. I'd like to save that image on my hard disk, using a specific resolution. As a default, the image is saved in 640X480.
View 2 RepliesVS 2008 Scanning Of All Pixels Of An Image
Dec 16, 2009I come straight to the point without going too far. I need to scan all the pixels of a generic image and for each pixel derive the RGB components. I started with the following function that performs its task very good and returns 3 array (R, G, B) with the different values, but unfortunately is too slow.
[Code]...
Distance Between Two Points On An Image In Terms Of Pixels?
Jun 1, 2012I'm using Visual Basic 2006 and i'm a newbie so excuse me if my question is not complete. I basically have a picturebox, in which i am displaying an image from a webcam. Now the user clicks on two points on the image and i need to get the distance between the two points in terms of the number of pixels. I did think of and try the pythagorean theorem, but i'm confused as to what units the answer turns out in. Is it in terms of inches? or pixels? Do i need to set the Scale Mode propety to pixels to get it in pixels? And if so, is there a way to get the number of pixels per inch? Sorry for asking so many questions but i've been reading other forums and i'm confused!
View 12 RepliesVS 2010 - Image Size Is In Points Or Pixels?
Sep 30, 2011On forms size and such, is it in points or pixels? I'd assume pixels, however, it seems when i make a image that is in the same size, (i put the size as the dimensions for pixels), the image seems not the same size. I'm unsure of how big a "point" is, but i am aware of a pixel.
View 7 RepliesInterface And Graphics :: Evaluate Pixels Within A Binary Image?
Aug 18, 2008How can I evaluate pixels within a Binary Image?What I have done so far is to take the image and use it's "getPixel" method and do a comparison of this pixel to black/white. But that can't be right... Can it? It's a binary image, I should be evaluating each pixel as true/false. Correct?
View 6 RepliesInterface And Graphics :: Check For All Colors In An Image Without Sweeping Through All Pixels?
Apr 26, 2011I'd like to check for all colors in an image. I've already came up with this:
Code:
Dim lst As New List(Of Color)
Dim img As Bitmap = System.Drawing.Bitmap.FromFile("C:image.jpg")
For x = 0 To img.Width - 1
[code]....
Unfortunately this needs to sweep through all the pixels, and it's EXTREMELY slow... method to get all colors in an image without sweeping through all pixels?
Reduce Size Of Image File Without Changing Pixels Values?
Oct 13, 2010I want to programatically delete some pixels that are unused in order to reduce the image size.Can anyone tell me how to reduce the size of an image file without changing the pixels values..
View 1 RepliesWinforms - Create Image With Width And Height 64 And Set All Pixels To Black?
Jun 21, 2012i want to create image with width and height 64 and set all pixels to black
dim b as bitmap
b.width = 64
b.height = 64
[code]....
the code not working
Possible To Work With PCX Image Files?
Feb 28, 2005it's possible to work with PCX image files in VB.Net? I know it's possible with most other formats like bmp and jpg.
View 10 RepliesWebcam Image Capture Work?
Aug 16, 2009picturebox1.image = system.image.drawing.fromfile(x) x is the location where the webcam store the current image.if the code above would work what is x ?
View 14 RepliesConvert Pixels To Cm/inch Or Cm/inch To Pixels?
Feb 28, 2009i have a problem with the Size in VB.Net I think the Control Size in VB.Net Is Pixels so I want to enter this size cm/inch
I want To Convert Pixels to cm/inch or cm/inch to Pixels
Get The Image Transparency Of The Character Sprite To Work
Jul 3, 2011I can't seem to find a way to get the Transparency of the character sprite to work. It always seems to take the background image of the form no matter how I tweak it.
View 15 RepliesTwitter UPLOAD PROFILE IMAGE Use To Work - Now Doesn't?
Aug 7, 2010i had this code to update a twitter profile immage and suddenly it doesnt work anymore,, i have reacked my brains trying to change it and fix it and to no avail,, nada,, every google search you can think of,, im at the end of my wits,, a full week 24/7 no sleep and now i give up. this is the code that use to work:
[Code]...
[2008] Background Image For A Table Doesn't Work
Feb 19, 2009i have a table layout panel with a background image. in the table there is some panels with transparent back colours. the image shows up in vb designer but when i execute it, it is invisible.
View 6 RepliesPixels In Cm Or Mm?
Oct 16, 2009i`m trying to find in cm or mm the area of a frame (capture image).The picturebox has dimensions height:456 and width:553 PIXELS.So the total number of pixels are 456 x 553 = 252,168
If i compare image 1 with image 2 i can locate and draw a rectangle around that area of pixels that are different.i can get the width and the height of this rectangle in PIXELS.e.g Height:49 Width:33 PIXELS
How can i covert these into cm or mm. What i need to know for the conversion?
I know dpi: dots per inch but what`s the value for my rectangle?
Addressing Pixels In A Bmp?
May 25, 2010I would like to believe that this code will display a horizontal line halfway across the PictureBox pbxData. In fact, what it does is create the BitMap and then blow up with a memory violation when trying to copy the BitMap into the PictureBox. The code that alters the array is commented out because I don't know how to address the elements of the array.
how to make this into useful code?
Imports System.Runtime.InteropServices
Public Class Form1
Private b1 As Bitmap
[Code].....
Best Way To Clear All Pixels In A Bitmap?
Aug 28, 2009Was just wondering if there is a way to quickly clear all pixels in a bitmap without creating a new one?
View 1 RepliesConverting Pixels To Points?
Mar 18, 2006Is there a way of converting pixels to points? The dimensions in VB are in pixels, but Office COM such as WordApp.Resize are expressed in points. So trying to align app windows is a mess.I guess the ratio of pixels to points varies from one monitor to another(?), so this would need to be calculated at run time.I tried a nifty trick of doing Me.Font.SizeInPoints / Me.FontHeight but that doesnt seem to be quite right or a very sensible way of doing it.
View 2 RepliesMove The Mouse Down Like -10, -10 Pixels?
Sep 16, 2009Is there a "MOUSEEVENTF_Click"? Also,How would I change this code so that it will click when I move/click my mouse wheel?
If MOUSEEVENTF_WHEEL Then
Call mouse_event(MOUSEEVENTF_LEFTDOWN, 0, 0, 0, 0)
Call mouse_event(MOUSEEVENTF_LEFTUP, 0, 0, 0, 0)
End If
EDIT: How would I move the mouse down? Like -10, -10 pixels? or something like that.
[2008] Get Certain Pixels From Screen
Feb 14, 2009i made this class to get certain pixels from screen:
[Code]...
Now i have lets say and array of pixels Example: Pixel 1 position X:100 Y:200 Red: 200 Green: 30 Blue: 40 Now i need to search all the sreen to find that pixel witout knowing its position. I need to have an output of number of results found and their position tnx.
Check The Size Of The Desktop In Pixels?
Sep 16, 2009I have a form that starts at a specific point (the right side of the left screen on an extended desktop). I am trying to work with users with different resolution. Insteadof changing the resolution to match the application, I want to try and get the size of the desktop (1280 x 2 for an extended desktop, 800 x 2 for a different resolution) and set the form to the same point... the inside (right side) of the left screen on an extended desktop. Is there a way to tell how long the desktop is from left to right and top to bottom?
View 2 RepliesChoose Different Colors Of Different Pixels On The Background?
Jul 8, 2009is it possible to choose different colors of different pixels on the background property of a form in vb.net?
i would like to clarify that i do not want to use an image to color the form.
i have a transparent form that will need to detect all the black colors behind it
Determine Color Of Pixels Inverted?
Mar 10, 2009This explains a lot why I was having much trouble determining the color of pixels. They are inverted!
Dim cursorpos As Point = Cursor.Position()
Dim hWnd As IntPtr = GetDesktopWindow()
Dim hDC As IntPtr = GetWindowDC(hWnd)
Dim i As Integer = GetPixel(hDC, cursorpos.x, cursorpos.Y)
Dim c As Color = Color.FromArgb(i)
ReleaseDC(hWnd, hDC)
Label6.Text = c.ToString
Label8.ForeColor = c