Set Pixel - Image Black

Apr 2, 2011

I am trying to make everything in my image black that is not white. I am having a little trouble doing so though.

[Code]...

View 3 Replies


ADVERTISEMENT

Draw Rectangle On Image Where Color Pixel Is Black?

Mar 17, 2011

I want to draw a rectangle on image where color pixel of image is black

View 1 Replies

Load A GIF File, And Start With The First Pixel And Check To See If That Pixel Color Is Closer To Black, Red, Green Or Yellow?

Jan 30, 2009

I would like to load a GIF file, and start with the first pixel and check to see if that pixel color is closer to Black, Red, Green or Yellow, then take what ever color it closest matched to and output that color as a number, 0, 1, 2 or 3. So just for a small example a 5x4 GIF would be converted to something like this: 0112223322220111332?

View 13 Replies

Determine The Pixel Width And Pixel Height Of The Largest Image?

Jul 4, 2010

How 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]......

View 2 Replies

Load An Image, Change Individual Pixel Brightness And Save New Image?

Dec 22, 2009

I 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 Replies

VS 2008 - Read A 16bit Binary File (tif Image) And Pixel Values Of The Image Ranges From 1200 To 4500 - EndOfStreamException Unhandled Error

Mar 18, 2012

I 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]....

View 10 Replies

Black And White Image Conversion?

Mar 20, 2011

i need a windows program (on visual basic express) to convert a list of images to black and white. then to send it to a microcontroller via ethernet. i dont know anything about vb at the moment so simple explanations and code would be great. in the meantime i will try learning vb. but i need this program quick.

View 3 Replies

Interface And Graphics :: Getting A Black Jpeg Image?

Nov 16, 2010

What am i doing wrong on this code? im trying to get my form into a jpeg picture, but everytime it only saves a black screen of what im doing

Code:
Private Shared Function BitBlt(ByVal hdcDest As IntPtr, ByVal nXDest As Integer, _
ByVal nYDest As Integer, ByVal nWidth As Integer, ByVal nHeight As Integer, _
ByVal hdcSrc As IntPtr, ByVal nXSrc As Integer, ByVal nYSrc As Integer, ByVal _

[Code].....

View 6 Replies

Convert An Image To Black And White Before Displaying It In A PictureBox?

Jun 20, 2009

Is there a way to convert an Image to Black and white before displaying it in a PictureBox? Or is there a way to make a PictureBox display color images in black and white?

View 1 Replies

Counting Red Pixel In An Image?

Nov 27, 2011

I 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")

[Code]....

View 14 Replies

How To Get Value Of Pixel Of Loaded Image

Aug 18, 2009

Now 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 Replies

Look For Image / Pixel On Screen?

Jul 7, 2009

I 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.

View 3 Replies

.net - GDI+ Image Conversion From Metafile To JPEG/GIF Results In Black Background?

Jul 8, 2009

So i am converting a metafile (EMF to be exact) to a jpeg or gif (doesn't matter as long as it's compatible with browsers) and when I do the conversion, all of the transparent pixels turn black. I have no idea how to do this in GDI+ but here is the method I am using to save the file:

Dim Img As System.Drawing.Imaging.Metafile = New System.Drawing.Imaging.Metafile(stream)
Img.Save(Server.MapPath("/FileName.gif"), System.Drawing.Imaging.ImageFormat.Gif)

View 3 Replies

Winforms - Create Image With Width And Height 64 And Set All Pixels To Black?

Jun 21, 2012

i 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

View 1 Replies

Obtaining RGB Values For Each Pixel Of Image

Nov 2, 2009

I 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.

View 2 Replies

Stream Pixel Data From An Image?

May 22, 2009

I 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].....

View 3 Replies

Interface And Graphics Image Pixel Viewer

May 3, 2011

I 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 Replies

Reading Pixel Color From A Image In Picturebox?

Mar 9, 2003

how to get color form a certain pixel from a bitmap image, but i cant find function getPixel in the picturebox object.

View 5 Replies

Pixel Counter - Count The Black Pixels The Grey Pixels The More Grey Pixels

Jul 27, 2009

I'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.

View 6 Replies

The Colour Of Each Pixel In The Image Should Be Inspected And Stored In One Or More Arrays?

Dec 7, 2010

I 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]....

View 6 Replies

VS 2010 Compare Pixel Range On Screen To A Saved Image?

Dec 1, 2011

We 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".

View 5 Replies

Interface And Graphics :: Rip Pixel Color Off Of The Background Image Picturebox ( The Level)?

Feb 27, 2009

Ive 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.

View 1 Replies

Interface And Graphics :: GetDIBits : Return The Pixel Positions In The Image At Which They Are First Located Adjacent To One Another?

Sep 24, 2008

how 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.

View 11 Replies

Interface And Graphics :: Get Pixel Color Of A Pixel On Screen

Sep 13, 2007

Is there a quick way to check the color of a pixel on the screen?

View 2 Replies

Convert A Black And White Image In JPEG Format To A Grayscale TIFF Format?

Jun 5, 2011

Im looking for a class or code in VB.NET that can convert a black and white image in JPEG format to a grayscale TIFF format.

View 2 Replies

Changing The Position Of A Form, Pixel By Pixel?

Jul 20, 2009

during the development of my project, i've fall in the need to change the position of some forms, pixel by pixel using a timer.Now, i've checked that the movement is very fluid when form is not very heavy, when it contains few elements, but when it has a lot of elements inside, the movement becames nervous and not fluid, the movement becomes jerky.

View 5 Replies

Extract Pixel Colours From Images But It's Only Getting Colours From The Previously Loaded Image

Jul 4, 2011

Public Class Form1
Dim x As Integer, y As Integer
Dim img As Bitmap
Dim pixelColor As Color

Public Function getpixel(ByVal x As Integer, ByVal y As Integer) As Color End Function Private Sub find_img_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles find_img.Click

[Code]...

whenever i load the image, i have to load it a second time to get the colour, or if i load a new one, i get the colour from the previous image, any ideas as to why?

View 1 Replies

Get RGB Pixel Color Of A Pixel On The Screen?

Jul 29, 2010

How 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 Replies

Get The Pixel Colour Of A Pixel On The Screen?

Apr 16, 2011

I 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 Replies

Comparing The 2 Images Without Actually Comparing Them Pixel By Pixel?

Mar 20, 2012

I have the code below on a timer( "b" is a bitmap )

If
Not (Clipboard.GetImage
Is
Nothing)

[Code]....

The problem is that it raises the event even if the picture didn't change.

comparing the 2 images without actually comparing them pixel by pixel (too slow to do the job)?

View 2 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved