Look For Image / Pixel On Screen?
Jul 7, 2009I was wondering if their is a way to set my program to search for a certian image or a set of pixels on the screen every 5 seconds, and if the specific image is on the screen, click it.
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VS 2010 Compare Pixel Range On Screen To A Saved Image?
Dec 1, 2011We stream the BBC news channel through a laptop hooked to a PC in reception for our clients. Annoyingly the stream is interrupted randomly (the line isn't dropping, it's the BBC's problem). Therefore when it's interrupted we get an error screen appearing which we have to go and manually refresh to get the stream back playing.
My intentions are to build an app which will be run alongside (silently) the stream monitoring intermittently a range of pixels. If the range matches the error screen that I mentioned previously then I'd call "Esc" to exit the full screen and then "F5" to refresh the browser and finally a double click on a specified coordinate to bring it back to full screen.
Problem: I've been doing some googling and so far have only seen related posts where the comparison is between two saved images. Due to this I expect the answer to be "Take a screenshot every now and then, compare, return result".
Interface And Graphics :: Get Pixel Color Of A Pixel On Screen
Sep 13, 2007Is there a quick way to check the color of a pixel on the screen?
View 2 RepliesDetermine The Pixel Width And Pixel Height Of The Largest Image?
Jul 4, 2010How do i determine the pixel width and pixel height of the largest image i can paint onto the graphics object of a printer while inside a printpage event?
Imports
System.Drawing
Class
[Code]......
Get RGB Pixel Color Of A Pixel On The Screen?
Jul 29, 2010How can I find out the pixel colour of a certain point on a web browser. For instance,WebBrowser1.getPixelColor(0,0) would get the rgb colour value of pixel 0, 0.It doesn't have to be rgb it might be hsl or whatever.The web browser is showing a local web page that is hosted on a network. If there is an error then the screen goes all grey. What I want to do is, if this does happen, display an alert message like - "An error has occurred
View 3 RepliesGet The Pixel Colour Of A Pixel On The Screen?
Apr 16, 2011I have an empty picture box with the background colour set to the transparancy colour. How can i get the colour of the pixels within the transparant picture box so that i can create a bitmap of the transparant section of the form?
View 2 RepliesLoad An Image, Change Individual Pixel Brightness And Save New Image?
Dec 22, 2009I am "weeks new" to visual basic 2008 but I was hoping that someone might tell me how I can open an image in whatever type of "visible" graphics window (always positioned at: x=0 y=0); move to some "definable position" of interest x=(n) y=(n); change the brightness of that "individual pixel" by some "definable means of measure" from its original state; and save the new image as a separate image file?
View 4 RepliesRe Getting Pixel Color At X - Y On Screen
Jan 25, 2008What I want to do is get the color of a position on the screen. I'd rather not capture the whole screen if I don't have to, just one pixel's color. I was trying to use GetPixel(ByVal hDC As IntPtr, ByVal x As Integer, ByVal y As Integer) As Integer, but I can't figure out how to get the handle to the screen.
View 5 RepliesDraw To 800*800 Pixel Box On Screen Efficiently?
Jul 25, 2009I need to draw 100 lines between 100 semi-random points in a 800x800 pixel square on the screen.
I've been using the built-in drawlines & drawrecangles functions inside of .NET, but my drawing gets erased everytime the form paints.
So, I've been thinking about perhaps drawing to an in-memory bitmap, but I'm not sure if that's a good solution.
Find A Pixel Color On Screen?
Aug 24, 2009I'm trying to figure out how I would find the color of a pixle.
Say I wanted to find RGB(255, 255, 0) and get the X, Y, position of it, how would I do that?
I was thinking of a loop with BMP.GetPixel, but I wouldn't know how to check. It's not compatable with RGB.[code]...
Get Pixel Color At Screen Position?
Feb 11, 2010Is there a way to get the color at a certain mouse position in the active window? I remember doing it with AutoIt Script, but I can't find any references for it in vb?
View 6 RepliesGet Total Pixel Size Of The Screen?
Mar 8, 2012I am writing an application that generates graphs. I need to set the bar size according to the size of screen (in pixels) How can I get the total screen size in pixels using vb.net code?
View 3 RepliesSearch For The Color Of A Pixel Anywhere On The Screen?
Nov 14, 2008I searched all over the internet and i haven't found anything about getting the color of a specified pixel like 150;200
View 4 RepliesFind Pixel Color Anywhere On The Screen By Coordinates?
Jul 15, 2009I need help to find pixel color anywhere on the screen by coordinates (for example pixel 377, 496).
View 7 RepliesFind Screen Pixel Of Chosen Color?
Nov 8, 2010How To Find Screen Pixel Of Choosen Color?
View 13 RepliesInterface And Graphics :: Capture The Pixel Of All The Screen?
Aug 2, 2011Is there a way to capture the pixel of all the screen? with all the applications of Windows?
View 4 RepliesVS 2008 - Read A 16bit Binary File (tif Image) And Pixel Values Of The Image Ranges From 1200 To 4500 - EndOfStreamException Unhandled Error
Mar 18, 2012I am trying to read a 16bit binary file (tif image) and pixel values of the image ranges from 1200 to 4500. I tried to use BinaryReader using ReadUInt16 but I get EndOfStreamException Unhandled error. ReadByte method works fine with an 8bit tif file. I do not know how to read a 16bit image file using binaryReader. Shouldn't I use ReadUInt16 since values of pixels range from 1200 to 4500?
[Code]....
Interface And Graphics :: Simple Code To Detect When A Pixel Changes Color Anywhere On Screen
Aug 19, 2010I'm trying to figure out some simple code to detect when a pixel changes color anywhere on the screen. Maybe with just a msgbox popup when it changes.
View 2 RepliesProgram To Detect Change In Selected Pixel On Screen - Memory Leak
Mar 21, 2011I am fairly new to visual basic and have written this program to detect a change in a selected pixel on the screen. When the pixel changes, a sound plays every x seconds. It works fine but after a few hours of operation a possible memory leak causes it to either crash the program or the PC. I have watched the process and I can see 4k added to it every 4 seconds or so. Where this memory leak is coming from?
Here is the code:
Public Class Main
Public pointx As Long
Public pointy As Long
Public areaselected As Integer
Public TimeToPause, SecondTimer, changefound As Integer
Counting Red Pixel In An Image?
Nov 27, 2011I want to count all of red pixel in an image. This is my code :
Dim x, y, kq As Integer
Dim image1 As Bitmap
image1 = Bitmap.FromFile("D:FiberAll.bmp")
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How To Get Value Of Pixel Of Loaded Image
Aug 18, 2009Now I have inserted a picturebox and now I have to get the color value of a pixel of the image which I load to it.
View 5 RepliesSet Pixel - Image Black
Apr 2, 2011I am trying to make everything in my image black that is not white. I am having a little trouble doing so though.
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Obtaining RGB Values For Each Pixel Of Image
Nov 2, 2009I am developing a software that would scan the image in a picturebox and obtain the rgb values of each pixel in the image and convert each rgb values to HSL values. I am using vb 2008 express edition. I am still a student. I am just starting to learn vb 2008. All I have done is to obtain the image in a file and paste it in the picturebox. Below is my code. I dont really know how to start with the process of obtaining the rgb values of each pixel and converting them to HSL values and averaging the HSL value.
Code to obtain image:
Option Strict Off
Option Explicit Off
Imports System.IO
Public Class Form1
Inherits System.Windows.Forms.Form
[Code] .....
I still do not know how to start with the process of obtaining the rgb value for each pixel.
Stream Pixel Data From An Image?
May 22, 2009I am working on a program that alters very large images. The images are usually in .tif or .bmp format. I load up the old image, copy a section of it into a new image, then save the new image. So far everything works my problem is that the images that i have to alter are 900mb+. Using the simple Bitmap class is not working because the images are quite apparently too large to fit into memory that way. (throwing an OutOfMemory exception)I want to step over the part of loading the image, and turn it into streaming the pixels from the image straight from the disk. I kind of have an idea of how to get the stream open and start reading, but I have no idea what to do with the 32bit integers that are being returned. how to stream pixel data from an image?
Dim oldImage As Bitmap
Try
oldImage = New Bitmap(file)
Catch ex As Exception
[code].....
Interface And Graphics Image Pixel Viewer
May 3, 2011I would like to create a pixel viwer (i.e. zoom into a picture to view the image's pixel information - Similar to windows paint or Photoshop). I have created an image zooming code, but it enlarges the image and sadly, doesn't show the blocks of pixels I was hoping for.I have thought of several ideas, but each worse than the next. As an example, re-create the image, increasing each pixel's area based on the zoom-level. But I can tell already that this process would be slow and judging by photoshop (or paint) there is a quicker method.
View 2 RepliesReading Pixel Color From A Image In Picturebox?
Mar 9, 2003how to get color form a certain pixel from a bitmap image, but i cant find function getPixel in the picturebox object.
View 5 RepliesDraw Rectangle On Image Where Color Pixel Is Black?
Mar 17, 2011I want to draw a rectangle on image where color pixel of image is black
View 1 RepliesThe Colour Of Each Pixel In The Image Should Be Inspected And Stored In One Or More Arrays?
Dec 7, 2010I am making an application which is capable of displaying a picture, and making adjustments to it. Unfortunately i'm stuck at this phase:The colour of each pixel in the image should be inspected and stored in one or more arrays.
My code so far
Public Class Form1
Dim OpenFileDalog1 As New OpenFileDialog
[code]....
Interface And Graphics :: Rip Pixel Color Off Of The Background Image Picturebox ( The Level)?
Feb 27, 2009Ive been working on creating a side scroller game, and the back color of my pictureboxes needs to go. when transparent, it shows through the program and onto whatever is active in your Windows os(usually Visual studios).
I am trying to rip pixel color off of the background image picturebox( the level), and replace parts of the character picture box that show transparency with the level art. there may be poor logic in my code?
Heres my code:
Dim newImage As Bitmap = New Bitmap(PictureBox1.Image)
Dim backImage As Bitmap = New Bitmap(PictureBox2.Image)
Dim ximg As Bitmap = New Bitmap(PictureBox3.Image)
[code]....
not the best idea, but all i get is one color for all the level pixels placed in the new image, which is odd. any poor logic you see in this code that could allow the newImage.setPixel not to be 1 color? when i breakpoint, it is recieving different colors from the backimage.getpixel, but only putting one shade on for setpixel somehow. im not going for an accurate color read from the background yet, just wondering why im getting 1 pixel color for the whole picturebox background when being changed.
Interface And Graphics :: GetDIBits : Return The Pixel Positions In The Image At Which They Are First Located Adjacent To One Another?
Sep 24, 2008how I could search a given bitmap, say "test.bmp" or a printscreen, for two pixels that are next to each other and that have specified color values? The colors are: &H486596 and &H213D66. I then want to return the pixel positions in the image at which they are first located adjacent to one another. I'm only after the first instance of the occurrence. I wish to use GetDIBits as I hear that it's quicker. So I want to find the first instance where the color value for pixel (x,y) = &H486596 and (x+1, y) = &H213D66.
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