I'm attempting to grab an image from a webcam without having to connect a driver to a window. I'm predominately using code from a devx tutorial. On page two of the tutorial, it shows how to grab a frame using WM_CAP_EDIT_COPY. The only problem is, I don't want a preview window. I want to simply grab the image without having to associate a window handle to a PictureBox for previewing.
View 6 RepliesI'm trying to capture an image from my webcam and save it as a .bmp file. the code i have works perfectly except for 1 issue i cant figure out no matter what I try the issue is that when i save the bitmap it only saves in 320x240 resolution even though I have set the resolution to 640x480 everywhere I could think of.
here is the (edited) code I currently have. some places I didn't know what to change so I put in 640,480 anyways to see what happened but that didnt make any difference and also didnt cause any errors so i left the changes there.
Const WM_CAP As Short = &H400S
Const WM_CAP_DRIVER_CONNECT As Integer = WM_CAP + 10
Const WM_CAP_DRIVER_DISCONNECT As Integer = WM_CAP + 11
Const WM_CAP_EDIT_COPY As Integer = WM_CAP + 30
[Code]......
I Am Trying To Get A Webcam's Frames, I Can Get The Frames Succesfully But I Cannot Preview It.
I Mean, The Program Can Succesfully Record A Video To My Local Disk, But It Doesnt Preview On A Picturebox.
But This Isn't So Important, I Don't Know If I Can Change The Resolution Of That Captured Video?
I Mean, I Have An HD Camera, But It Doesnt Record On HD, It Just Records The Right Top 640x480 rectangle of screen. So I Mean It Doesnt Even Records Me, It Records My Back...
[URL]
So like I said before, I have a webcam capture and inventory script which I put together from various sample code. It works great, but I need to add a preview pause/ to break apart the capture and the save functions.
Imports System.Runtime.InteropServices
Public Class Form1
Const WM_CAP As Short = &H400S
[Code].....
am trying to extract a preview image (jpg file) from a canon raw (cr2) photo file using the well known program exiftoolExtracting certain meta data works fine with this kind of code:
Private Sub GetExifData(ByRef id As ImageDataType)
Dim ExifTool As New Process
Dim ExifToolStartInfo As New ProcessStartInfo
[code]....
I play a game and in the game you acquire skills which you can display on the screen in a box very similar to a data grid. The grid has 3 columns and X number of rows.Column 1 is the name of the skill, column 2 has a descriptive term like "Beginner" and column has the number of points you have acquired in that skill. So it would look something like this:[code]Remember that it is in a data grid so it has cells like an Excel spreed sheet.The program that I use is able to parse the skill name and the points and save that information outside the game to a n area in the program.My question is, is this possible to do something similar in VB? That is something like, Press a hot key, with will get a screen shot, parse the data and save to a data grid in my VB program.
View 2 RepliesIs there a way by using ASPxUploadControl to have an image get uploaded automatically when you click the ok button after browsing and then get shown a preview of said image but only upload the image to the server officially after you click an ok button? I found [URL] which looks like it does the automatic upload but thats about all I've found so far.
View 1 RepliesI am wanting to open an image via the OpenFileDialog. Is it possible to have a preview of the image when I select it via this dialog?
View 1 RepliesHow do i print and preview the contents of an image box
View 8 RepliesIm looking to embed an .exe into my form. An example of what I want to do is the preview area when selecting a screensaver in Windows. It shows a small running preview of the app in the current window. How do I do that in my VB form?
View 1 RepliesI have got one problem by uploading file. I created an aspx file in asp.net then I added a fileupload control and image control. I want to show preview image in image control before uploading. I created a following script.
[code]...
It is not work in every browser. How could I do that?
How i can make print preview to image in picture box before i print?
i wanna do that by vb.net code
I have this as code to run the program
Process.Start(ListBox1.SelectedItem.ToString.Split(New String() {" "},
StringSplitOptions.None)(1))
Which used to work but then I added a "Preview image" function like this :
(ListBox1.SelectedItem.ToString.Split(New String() {" Image:"}, StringSplitOptions.None)(1))
I now discovered that the first code is useless, because it selects everything after " " to run, including the "Image:"
This is how a listbox item is stored:
Tomb Raider Level Editor - Original C:Program FilesTomb Raider - Level Editor omb4.exe Image:C:Program FilesTomb Raider - Level Editorload.bmp
As you can see it'll use this
C:Program FilesTomb Raider - Level Editor
omb4.exe Image:C:Program FilesTomb Raider - Level Editorload.bmp
to run
Is there any way I can make it choose the path from " " and when it finds "image:" it stops?
I recently posted a WIA sample project in the codebank in this forum here : [URL] What I was trying to do is provide a video preview of the webcam video in a window, but I am having problems with trying to pass in the Window Handle. It should be as simple as Adding a reference to "WIAVideo 1.0 Type Library", and then putting in the following
[Code]...
I have a FileUpload control in my aspx page and I want to display the image selected before postback so that user confirms the image to upload.
View 5 Repliesi'd like to know if is it possible to use the flashvars properties in AxShockwaveFlash to load a preview image for any the video
View 2 RepliesI'm trying to build a project where I have a set of products in a listbox. When you select an item in the listbox, a picturebox shows the preview of that certain product.I practically finished the entire project as well as the picture part; however, I realized that the way I set up the coding, I used image locations from my hard drive meaning that someone can't view them on another computer.This is a portion of my coding:
[highlight="Dim PicSelection As String
PicSelection = ListBox1.SelectedItem
Select Case PicSelection[code].....
i want a code for capturing snap through webcam i have a form where i placed a button, what i want is when i click that button it capture a snap and save it in c: drive ?
View 1 RepliesI have develop VB 2008 that can preview the image through 2 webcams. However, when i run my VB and select to preview through my USB webcam, it display dark screen. But i select to preview through my built in webcam, it works.So, can anyone can the code attached for me?For your information, the USB webcam can function properly using other video/image software.
VB version: VB 2008
OS: Windows Vista
Webcam brand: LifeTec
direction to some methods that can capture the contents of a form so that it can be saved as an image. The catch is, the form may not always be displayed on the screen, so BitBlt doesn't work for this particular scenario.
View 8 Repliesi am doing the project on visitor management. i want all code for capture the image from webcam. or steps for that.
View 1 RepliesHow to use GDTwain control in VB.net
View 1 RepliesI need to show video in a picturebox, and when a button is pressed, capture the frame. I am making a desktop qr reader. I have the qr reader completed and working. my issue is my camera now. I would prefer something that actually works, and doesn't have severe memory leak issues, and doesn't throw an exception after it's first or second use. Would AviCap32 or Direct Show be better for what I want? Which would capture the image fastest, without causing exceptions? I tried using an open source solution called webcam_capture.dll, and it worked at first, but now I am getting an exception that I dont know how to fix. I'm assuming this goes in vbGeneral, and not the Interop and Upgrade. Most examples I have seen, use interop, so I wasn't sure. I would prefer not to use WIA. I have attempted it, and it doesn't work quite right on my computer, and this application will be distributed.
View 12 RepliesI'm thinking about how best to accomplish the following and wanted to see what others suggest.I'd like to capture an Excelworksheetnd save the area that has been edited (vs. the area thatremains blank)s a PNG image. This would ideally be achieved through an Excel add-in.
View 1 RepliesI have written an application which extracts a list of URL's (currently in Internet Explorer cache) from an XML file and displays them in a data grid view. From here I would like to launch Internet Explorer in a hidden mode and capture an image for each of the selected URL's in the data grid view. Is this possible?
View 2 RepliesI've been trying to find a way to use my video camera as a webcam and do chatting from different programs including mine.
my problem is how can i capture an image from my video camera. below are camera stats[code]....
I have written a code from which using a web camera one can record a video and save it onto the HDD but now according to a client requirement he needs to play that video and capture still images from the video and save it onto a picture box's and here is where i am having issues.
1)when i use windows media player to play the recorded video i don how to capture the image from the video by triggering an event
2) also i need to know if i can play the video on picturebox tool(i tried using the winmm.lib and Mci but it din work out for me)
Been throwing around concepts lately at attempting this but haven't been able to come up with anything that actually works. The concept: Capture an image of a process that is hidden.
View 8 RepliesI want to capture the image of my webbrowser, or actually just a part of it.I already achieved it, but it just takes a screenshot of it instead of capturing the bitmap itself. So when i use this technique and you drag another window above it, the window is also captured. (this is what I don't want.)
My code:
' 1. Get the WebBrowsers bitmap.
Dim bmp As New Bitmap(WebBrowser1.Width, WebBrowser1.Height)
Dim BMPEndResult As Bitmap
Dim graph As Graphics = Graphics.FromImage(bmp)
[code]....
So I need to get the image of the webbrowser:
- without the scrollbars if possible
- Even if the window is minimized or in the task bar
- Full webbrowser
- and also if possible just a part of it, where I can specify the top, left, width and height
The issue is how do I best capture the invoice number of an tiff image?
I have a VB application in visual studio 2005 that scans invoices, creates .tiff's utilizing a standard image scanner.
I've tried the following...I thought I could save the image to text in an array and find the 6 digit number. Then, I tried to save the image to xml trying the same principal but I get a general error A generic error occurred in GDI+.