what 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).
I wish to make a bitmap image (.bmp) transparent using VB.NET code.
View 3 RepliesI'm trying to make an image in a picturebox transparent, so that i can see and click the controls behind it in the transparent area. This reason for this is that i'm trying to make a hexagonal grid that needs each cell to work independantly of each other when clicked, and needs to include a changing image. I'm trying to do this with pictureboxes, but even though i've made the GIF images i'm using transparent in photoshop, They aren't displayed as such in design view or at runtime, as the corners stay grey. I'm making a clone of the Quiz-show Blockbusters
View 6 RepliesI want to replace every black pixel in "file.bmp" with transparent pixel
Dim b As Bitmap = New Bitmap(64, 64)
b = image.fromfile("c:/file.bmp")
For y = 0 To 63
[Code].....
How can I replace black pixels with transparent pixels?
i need to know the code for making images inside my forms slightly transparent so I can still see the form behind it.
View 1 RepliesI'm having problems making an image properly "transparent"
Dim x As Integer
Dim y As Integer
Private Sub PictureBox1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PictureBox1.Click
[Code] .....
The initial image is Transparent, however, once you create another image very close to it, there is a "box" around it. That "box" is what I am trying to get rid of. I have no clue on how to get rid of it. Yes, I have made the image itself, transparent, as the initial image is transparent. Just any image that makes contact with the other images show the "box".
I have a code that takes the pink out of a image and makes it transperent. So its just the image no color around it. How do i make a shadow for that image like below to make it look like it has its own shadow?
View 9 Replieshow i can make a picture box with an image in semi transparent like a watermark that you can see through to what is behind it.
View 4 RepliesI'm attempting to write a solution so that my user's can "watermark" their Images with their Company Logo. I've got the actual watermarking part done and working so now I'm creating the "upload logo" feature so that they can provide me with the Logo they wish to appear watermarked onto their Images.I'm using VB.NET and this will probably end up in a Web Service that accepts the Logo JPG file, and returns the "altered" Logo. What I need to happen in this Web Service is:
1) Gray-scale the image. Which I have working as well, thanks to this article.
2) Make the background transparent (so the logo looks clean when watermarked onto an image). This is where I'm stuck.
I think for the most part, any logos that are uploaded will have a generic white background but I can't assume that. Is there a way to somehow detect the background of an image or the background colors, so that I may make those colors transparent?So basically what I need is just a way to determine the background on an Image or even just the background colors so that I may make them transparent.
[code] how to make the part that drops down semi-transparent or completely transparent resembling floating text. So that I can see the form underneath.
View 1 RepliesI'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.
Question:Is it possible to make a userform transparent but have non-transparent controls?I notice changing the opacity of the userform will change the opacity of controls embedded on it.
View 9 RepliesHow can we get the pixels of an image in a fast way?
View 1 Replieshow 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?
View 5 RepliesI 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 RepliesI 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 RepliesI 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 RepliesI 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]...
I can't remember exactly if this is possible or not but what I am attempting I would think should theoretically be possible. I know it is possible in WPF but the company I am working for doesn't want to make the transition just yet. Basically what I want is to use a background image on a form for the background and I have a docked control on the right and left. I have set the background on both of these docked controls to transparent however it is showing the back color rather than the background image. I tried, rather than setting the background image property, to override the onpaintbackground and onpaint events and use e.graphics.draw(picture, me.clientrectangle) but it still seems to just pick up the backcolor as the true transparent background so I'm wondering if it's possible to get it to show the background image through the control rather than the backcolor of the form?
View 3 RepliesI'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 RepliesOn 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 RepliesHow 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 RepliesI'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?
I 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 Repliesi 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
I have a black & white image (find below)I want to print that image by clearing the background(i.e black dots in the form of rectagle)If i print the below bank check it is printing completly black (unable to read the content). Pls do the needful. Many Thanks
View 4 RepliesOk I made a gif image with a transparent background, but when I draw the image to another, the background is white.
I've looked on google, but all the comes up is how to make a gif file have a transparent background, not use an existing one.
I have inserted PNG image (transparent background) but it can't go to transparent. I want it to be front of other label but it's gray background hide the text what i have to do with this?
View 7 Repliesi know how to make a picturebox have a transparent image within it, and i know how to make forms transparent, but what i cant seem to figure out is how to add an image which has transparent parts to a completely transparent form and have it still look nice. you know when you find images which look really good by them selves, but then look really bad when moved to a different background cause they still have the white border (or any other colour border). is there ANY way which i can accomplish removing this border? its almost like the alpha channel that removes the ugly border, when putting the image on the form, is forgotten about and the colour of the forms background fills in the gap..
View 3 RepliesMe again. I also have a png image and a web cam video in my form. I have transparent parts on the png image that show through to the form background colour.
How do I set it so it shows the video in the background, when I put the png image over the top of the video?
At the moment its still shows straight through to the back of the form?