crop

问题 I have a form where I use cropit.js to crop an image. Button is onclick calling jquery function which takes result of cropit (cropped image) and with ajax push it to controller. Here it seems to work, but when I do this, everything looks ok, I dont see any error but the result is that url is stored in database with file name, but file itself is not stored in default uploads directory here is my model class Project < ActiveRecord::Base mount_uploader :profile_pic, ProjectProfileUploader end

问题 I am trying to crop out the printer marks that are at the edges of a PDF. The path i want to take to solve this problem is as follows: Convert PDF into a bitmap and then traverse the bitmap and try to find the lines, then once the lines are found, find the coordinates of the edges of these lines, set the cropping coordinates to the coordinates just found. However the problems that pop up in my mind with this approach is how to know when the lines end and the actual page starts. How to

问题 I am using following code to crop an image taken from the camera: Intent intent = new Intent("com.android.camera.action.CROP"); intent .setDataAndType(outputFileUri, "image/*"); intent.putExtra("outputX",600); intent.putExtra("outputY", 600); intent.putExtra("aspectX", 1); intent.putExtra("aspectY", 1); intent.putExtra("scale", true); intent.putExtra("return-data", false); startActivityForResult(intent, 2); My problems are: Image cropping is working good on some devices and on some devices

问题 I am trying to extract and save a certain portion of a PDF file using specific coordinates (x,y,w,h). I am using the following code, which seems to be working okay: Function CroppedPdf(Source As Byte(), PageNumber As Integer, Rect As System.Drawing.Rectangle) As MemoryStream Dim reader As New PdfReader(Source) Dim h = reader.GetPageSize(1).Height Dim document = New iTextSharp.text.Document(New iTextSharp.text.Rectangle( Rect.Right / 300 * 72, h - (Rect.Top / 300 * 72), Rect.Left / 300 * 72, h

问题 I want to play a video in full screen in a videoview and after some time I want to crop to a circular view ? How can I achieve that ? 回答1: Another way is put this type of image overlay on your videoview Relative or FrameLayout (Circuler is transprent so videoview will visible only in circle) By default make visibility GONE this imageView and Change VISIBLE it runtime when you want. MAY BE HELPFUL TO YOU 回答2: There is a better way. You can create a custom SurfaceView. Which actually clips the

问题 I my app, i have one uiscrollview and have subview uiimageview on it, when user clicks any photo from library it display on that imageview, user can move,zoom and scale the image, when user clicks crops button it should crop that part which is in imageview, in iPhone 3GS its working perfectly fine, however in retina it not working correctly cropping is showing different image. - (UIImage *)currentSlice { CGSize sliceSize = imageView.frame.size; UIGraphicsBeginImageContextWithOptions(sliceSize

问题 I have a dataset of images.jpg and a file csv has values bounding box position is top, left, right, bottom. I use ubuntu OS and the python language. 回答1: Something like this should work. It assumes a few things: that the separator in your CSV is a semi-colon, i.e. ; that your CSV file is called images.csv that you want the cropped images output to a sub-directory called output that you have PIL/Pillow installed, though it could easily be adapted to use pyvips , OpenCV , skimage #!/usr/bin/env

问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 6 years ago . I have BitmapImage and I need to crop it to a rectangle of size 200x200. The rectangle should contain the center of the source

问题 In my app I'm loading plenty of images from the web. That's working fine so far: @Override public void onSuccess( byte[] response ) { Bitmap image = BitmapFactory.decodeByteArray( response, 0, response.length, options ); ... } But in fact it would be nice to use only an extract of the image during the application process. So I tried something like this: @Override public void onSuccess( byte[] response ) { Bitmap source = BitmapFactory.decodeByteArray( response, 0, response.length, options );

问题 When I'm using the post thumbnail feature in wp3 and set the thumbnail size to e.g. 230x160 wp crops the image from the top left corner to the set size. Sometimes this is sadly just the wrong part of the image. Is there any way to give the backend user the chance to choose the part of the original image which should be the thumbnail? Like a jQuery script or something? Right now I'm using a custom field workaround to upload a second image with the excact dimensions... Any ideas on this? //EDIT