I am trying to do a code for my application that will crop a selected images into oval shape.
I tried to search for a reference on the internet there is only example on how to resize it. But is it possible to crop it into shapes?
I need to know how to make the web application crop an image and resize it as a thumbnail to use it later on in the application?
View 3 RepliesTo reduce the size of some images I have, I'd like to remove the white padding that some have. The idea would be that if one has large white areas on the borders, then those can be cropped to save some space.
View 1 RepliesI have an application which first load an 1200*800 image into an 600*400 picturebox. When i crop the whole image in picturebox and save it, the size will be 600*400. How can i make it save in 1200*800?
View 6 RepliesThe image can be anything. It can be jpg, png, anything.
Load it.
Crop it. Say removing first 100 pixels from the left.
Save to the same file
I was told to use bitblt to crop my image. But i am new to vb and am really confused as to how to do it. I am making a board game. The player chooses its colour of player (a pawn),this image is then placed on the board. I want just the pawn to show and not the box around it.
View 6 RepliesI'm developing a free project for my A/L Project. How to crop a image in a Image Box in Visual Basic 2008 Exp: Using WIA layer.
View 1 RepliesI'm trying to crop and resize the image in richtextbox.
View 2 RepliesI looking for a way to crop/stretch a imagem and save using vb.net
View 3 RepliesHow can I crop an Image to preset dimensions and size using code.I can do this with MS Office Picture Manager, but I want my users to do this from within the app. using the preset dimentiomns and sizes.[URL]
View 1 Repliesi am creating a winform program using vb where i am loading an image into a picture box. then in the mouse down event i am creating small circles which can act as points which will be displayed on the image. say creating five points around the eye of a bird. then i am having a button by clicking it , a polygon will be drawn on those selected circles x and y as edges. i am having no issues until this. when i am trying to add another polygon in the same picture by clicking around its leg or whatever and pushed the draw button there must be another polygon i.e. two separate polygons 1 on eye and 2 on leg. but there is only one polygon from eye to leg. so my questions are
1) how to close a polygon and draw another one in picture box
2) how to select a previously drawn polygon and delete it.
picturebox_mousedown
Private Sub PictureBox1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles PictureBox1.MouseDown
[code].....
I am trying to resize images in batch using the below VB.NET code. The images are fairly large and when they are resized the images do not look very smooth. I have looked at Drawing2D.SmoothingMode.AntiAlias but cannot get that code to work.
Imports System
Imports System.Data
Imports System.Math
[code]....
i have been troubled with my resize function, I have loaded images and when each image is selected is will be displayed on the picturebox...the problem is that when i resize the image in the picturebox it throw me an error message Object reference not set to an instance of an object. I have 4 buttons left, right, up and down..here's my code for it...
[Code]...
The aim of my program is to load a picture into an pic box, then to be able to place multiple shapes on the picture in the pic box by clicking on the location where i want the shape. The type of shape will depend on the radio button which has been selected. Basically all i want is choice of X or O. (its not tic tac toe either At the end of it all i want to be able to save the image WITH the shapes on it, doesnt matter what format its in (gif, jpg, bmp) as long as it has color and i can see the original image with the shapes included.
I have made several attempts at this, and this is what i have so far. (I am brand new to VB and programming so i need all the help i can get) I have hit a wall with how far previous examples can get me.
[Code]...
I have two bmp files:
footer.bmp: 200 x 200
product.bmp: 1000 x 1000
I want to create a new bmp file with 200 x 500: Append the footer.bmp into the bottom of the new image - position (0, 300) Resize the product.bmp to 200 x 300 and position into (0, 0)How do I do this using VB.NET?
Dim oBitmap As New Bitmap(200, 500)Dim oGraphics As Graphics oGraphics = Graphics.FromImage(oBitmap)
I looking for right code to proportional resizing images in different formats in this peace of code. I would like when this will go through folder to folder.
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
For Each File As String In Form1.rt.Items
Dim foundFileInfo As New System.IO.FileInfo(File)
Dim a As String = tB1.Text & "Gallerymanje" & foundFileInfo.Name
Dim b As String = tB1.Text & "Galleryvece" & foundFileInfo.Name
My.Computer.FileSystem.CopyFile(File, a, True)
My.Computer.FileSystem.CopyFile(File, b, True)
Next
Close()
End Sub
I'm using a web cam that takes 320 X 240 pictures. This sort of gives the picture a "landscape" look to them, and I need to re-size the pictures to a 169 X 225 "portrait" picture. Its for a badge program. Anyway, when I re-size the pictures, they get all scrunched up because of the difference in aspect ratio. Is there a way to re-size the image and the aspect ratio at the same time? Would this be considered cropping or resizing?
View 5 RepliesI've got a data-bound data grid view and one of the fields is an image. How do I scale down the image to a reasonable thumbnail size (say, 100px wide) and adjust the height and width of that cell so that it fits the image?
View 2 RepliesI am developing a visual basic 2008 express edtion program of an organisation that should get images from the system and display on image/picture box. further the program should save the displayed image in access database so that it can be retrieved together when you want to search the information about that particular employee.
View 7 RepliesI have the following code in my IHttpHandler:
Dim MemoryStream1 As New System.IO.MemoryStream
MemoryStream1.Write(SqlDataReader1("cover"), 0, SqlDataReader1("cover").Length - 1)
Dim Bitmap1 As System.Drawing.Bitmap = System.Drawing.Bitmap.FromStream(MemoryStream1)
Dim Width1 As Integer = Bitmap1.Width
Dim Height1 As Integer = Bitmap1.Height
[Code]...
i am trying to figure out how to go about my two problems i am currently having when trying to display a resized picture into a picturebox on my form.What does it need to be in order to grab the image thats already been cropped in the pbCrop picturebox? I have the cropped image in the pbCrop picturebox and i then am trying to resize it.I need someway of taking the newly resized image and placing it back into the pbCrop picturebox, indicated by the "'code to draw it into the pbCrop picturebox" code below: NOTE (Ly = 60)[code]
View 2 RepliesHow do I add constraints to image resizing code? I want the image to be no larger then 165x146. The below code does not hold the constraint when image is 525x610.[code]
View 1 RepliesI am trying to print an image (from file) to a the printer using a PrintDocument.I am re-sizing my image so that it is scaled to be full page on the printout when I print this the image is cropped slightly.
EDIT 2:I am using the margins to calculate the area to use:
With printSettings.DefaultPageSettings
Dim areaWidth As Single = .Bounds.Width - .Margins.Left - .Margins.Right
Dim areaHeight As Single = .Bounds.Height - .Margins.Top - .Margins.Bottom
End With
The bounds of the page are 1169x827 (A4) and with the margins it is 1137x795.After resize my image size is 1092x682 and I am using the following code to draw it:
e.Graphics.DrawImage(printBitmap, .Margins.Left, .Margins.Top)
The annoying thing is that when I print to the PrintPreviewDialog it is scaled perfectly but when I print the exact same code to the actual printer it does not fit.
EDIT 3:Full code can be found at this url Usage:
Dim clsPrint As New clsPrinting
With clsPrint
.Landscape = True
[code]....
1. Image Resizing: The code takes the screen when you press the button and then save the image. My question is, how can I set the image size before saving?[code]
2. Location (in the center):Almost all computer have different resolution from another computer. My question is how do I find the center of the screen and is where the program (when they open the program and see it in the middle of the screen)
Imagine I have a rectangle say 400px x 300px. All of this is very easy using Sytem.Drawing. DrawImage. But then I want to leave the left hand side as 300px but change the right hand side to 250 px. I can draw the box using 4 DrawLines but I don't know how to squash the image into the new shape. I want the right hand side of the shape to be 250, the left size 300 and the top and bottom 400px.I can't use DrawImage as it expects the left and right sizes to be the same. Is there a way to manipulate the image into the new shape?I've looked at other questions, but they only apply where the left and right hand side is equal.Any thoughts on how to squash an image into a shape which did not have parallel sides?
View 3 Repliesi was searching google for some kind solution and i found one, i tried to implement it in my code but it doesn't work. The problem is that after resizing white images they gets gray border.Here is the link of soloution i found:It says:
This problem is occuring because you are interpolating your image data to a new size, but along the edges there are no pixels to interpolate and .NET uses black pixels for these edges by default. To fix this you need to use an ImageAttributes class in your DrawImage call....
https:[url].....
CODE 1: And this is my code WITH IMPLEMENTATION OF ImageAttributes:
Private Shared Function ResizeImageFile(ByVal imageFile As Byte(), ByVal targetSize As Integer) As Byte()
Using oldImage As System.Drawing.Image = System.Drawing.Image.FromStream(New MemoryStream(imageFile))
Dim newSize As Size = CalculateDimensions(oldImage.Size, targetSize)[code].......
I'm trying to change the size of the image in a picturebox, without resizing the picturebox?
View 3 RepliesCode that opens image file this code works properly
Private Sub MenuItem4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles FromFile.Click
PBDisplay.Visible = False
If OpenFileDialog1.ShowDialog() = DialogResult.OK Then
PBDisplay.SizeMode = PictureBoxSizeMode.AutoSize
[Code] ......
This code is what I am using to save image after it is re sized, It will not save the new image, it saves the old image and the old size. I am using a picture box to import the image into, then I am resizing the picture box and the image. But when it is saved it reverts to the original image.
Private Sub MenuItem6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Save.Click
If SaveFileDialog1.ShowDialog = DialogResult.OK Then
PBDisplay.Image.Save(SaveFileDialog1.FileName)
End If
End Sub
Ok, it seems my question might not have been straightforward, so here is a more generic question.On a form in a picturebox if I have a 32 x 32 picture. How can I scale it to be 64 x 64.I am not refering to stretching the image or resizing the picturebox. I mean using the ScaleTransform method of the graphics class. How can I do this without deforming the image?
View 5 RepliesI want to resize the resolution of an image before uploading it to local storage. Right now it saves the image in its full resolution and I have to manually resize it using width="200" height="200" or a css tag in aspx. I want to reduce the file size of an image before storing it, hence by resizing the image resolution when the user uploads it via button. I've tried using System.Drawing before and setting the int imageHeight and int maxWidth to be resized but couldn't seem to get it to work.
My code so far is:
Protected Sub btn_SavePic_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btn_SavePic.Click
Dim newFileName As String
Dim SqlString As String
[Code] .....