Here is an example using the exif PHP extension and WideImage for image manipulation. You can either do that with exif PHP extension or with PEL.īasically, you have to read the Orientation flag in the file. Public Sub DrawRectangleFloat(ByVal e As PaintEventArgs)In order to do that, you must read the EXIF information out of the JPEG file. You can use smart coordinates for the parameters value. Public void DrawRectangleFloat(PaintEventArgs e) The result is an image cropped to the specified rectangle. Void DrawRectangleFloat( PaintEventArgs^ e ) For example if an image sampled so that you have 5 pixel sub regions, then (For example, sampling an image that has 100 pixel across, down to 20 pixel samples), then you can use an sampling offset percentage in the range 0 to 19.9 to select the first pixel in each region, 20.1 to 39.9 for second, and so on. NB: Size must be the first folder specified in the URL. generates a 150 pixel square dummy image:. Public Sub DrawRectangleInt(ByVal e As PaintEventArgs)Į.Graphics.DrawRectangle(blackPen, x, y, width, height) Height is optional: if no height is specified, your placeholder image will be a square. my detective skills are lacking somewhat so maybe thats why. For example a double image in the range of 0-1 and displayed with imshow() will save exactly as a double with save() but if you get its displayed version with getframe() it will be a uint8 in the range of 0-255 since that's what the display adapter uses.
I have checked the wideimage docs but couldnt find anything. Public void DrawRectangleInt(PaintEventArgs e)Į.Graphics.DrawRectangle(blackPen, x, y, width, height) How can I use wideimage to check if the file is actually an image and not word document renamed to. Create location and size of rectangle.Į->Graphics->DrawRectangle( blackPen, x, y, width, height ) Void DrawRectangleInt( PaintEventArgs^ e )
Wideimage example how to#
Public Sub DrawRectangleRectangle(ByVal e As PaintEventArgs)ĭim rect As New Rectangle(0, 0, 200, 200)įor information about how to draw a RectangleF, see DrawRectangles(Pen, RectangleF).Ĭreates the position and size of a rectangle.
Rectangle rect = new Rectangle(0, 0, 200, 200) Į.Graphics.DrawRectangle(blackPen, rect) Public void DrawRectangleRectangle(PaintEventArgs e) Pen^ blackPen = gcnew Pen( Color::Black,3.0f ) Į->Graphics->DrawRectangle( blackPen, rect ) resized image->resize(400, 300) This is equal to passing ‘inside’ as fit value. Void DrawRectangleRectangle( PaintEventArgs^ e ) By default, resizing keeps the original image’s aspect ratio and the resulting image fits the given dimensions from the inside.
Wideimage example zip#
Installation Just download the zip below and unpack wherever you want it. It supports more TGA subformats (not just 24 bit images) and makes it possible to create TGA images with PHP. First, load an image directly from an uploaded file, presented in an input file field named pic.
Wideimage example code#
The following code example is designed for use with Windows Forms, and it requires PaintEventArgs e, which is a parameter of the Paint event handler. It got quite popular amongst PHP programmers and was included in a few interesting PHP projects, for example WideImage by Gasper Kozak. A simple gallery example In this typical gallery example, I’ll show how you load an image from an uploaded file, resize to two different sizes, and apply watermark to them.