crop

This question already has answers here : How do I crop a UIImage in Swift? (2 answers) I'm writing an app that takes an image and crops out everything except for a rectangle in the center of the image. (SWIFT) I can't get the crop function to work though. This is what I have now: func cropImageToBars(image: UIImage) -> UIImage { let crop = CGRectMake(0, 200, image.size.width, 50) let cgImage = CGImageCreateWithImageInRect(image.CGImage, crop) let result: UIImage = UIImage(CGImage: cgImage!, scale: 0, orientation: image.imageOrientation) UIImageWriteToSavedPhotosAlbum(result, self, nil, nil)

Closed. This question is off-topic. It is not currently accepting answers. Learn more . Want to improve this question? Update the question so it's on-topic for Stack Overflow. Can anyone recommend a decent image cropper directive for Angularjs? I've looked at a few out there and can't find much of anything. Has anyone found one they use that they like? We currently use angular-file-upload ( https://github.com/danialfarid/angular-file-upload ) to upload files so it would be nice if it worked with this. you could try ngImgCrop which it's awesome! it's way more than only a image cropper! and I

Is there any way to define the crop area rect using the camera image picker? Yetanotherjosh Unfortunately, no. You have to implement a custom cropping GUI to get anything other than the default, as stated in the Camera Programming Topics for iOS: "When using built-in editing controls, the image picker controller enforces certain options. For still images, the picker enforces a square cropping as well as a maximum pixel dimension. For movies, the picker enforces a maximum movie length and resolution. If you want to let the user edit full-size media, or specify custom cropping, you must provide

My intention is to have the user pick an image from the gallery, then have a cropping activity come up. However, I need the rectangle that defines the cropping mask to be locked to a certain dimension and then the user simply repositions it to display a portion of an image. Any ideas on how this would be done? Thanks -T Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null) .setType("image/*") .putExtra("crop", "true") .putExtra("aspectX", width) .putExtra("aspectY", height) .putExtra("outputX", width) .putExtra("outputY", height) .putExtra("scale", true) .putExtra("scaleUpIfNeeded", true

How can I crop an image in the center? Because I know that the box is a 4-tuple defining the left, upper, right, and lower pixel coordinate but I don't know how to get these coordinates so it crops in the center. Chris Clarke Assuming you know the size you would like to crop to (new_width X new_height): import Image im = Image.open(<your image>) width, height = im.size # Get dimensions left = (width - new_width)/2 top = (height - new_height)/2 right = (width + new_width)/2 bottom = (height + new_height)/2 # Crop the center of the image im = im.crop((left, top, right, bottom)) This will break

Working on Face Detection and Recognition, and after successfully detecting a face, I just want to crop the face and save it somewhere in the drive to give it for the recognition code. I am having hard time doing the saving the Region of Interest as a new image. I have got some codes online but it is written in the previous version of OpenCV that uses IplImage* . I am using OpenCV 2.4.2 that uses cv::Mat . Heeeelp!!! I will post my codes(Face detection and Recognition per se) if you guys want it. #include <cv.h> #include <highgui.h> #include <math.h> // alphablend <imageA> <image B> <x> <y>

I have imported a world map dataset from www.GADM.org using the R package raster. I would like to clip it to a polygon I create to reduce the size of the map. I can retrieve the data and I can create the polygon no problem, but when I use the 'gIntersection' command I get an obscure error message. Any suggestions on how to clip my World Map dataset? library(raster) library(rgeos) ## Download Map of the World ## WorldMap <- getData('countries') ## Create the clipping polygon clip.extent <- as(extent(-20, 40, 30, 72), "SpatialPolygons") proj4string(clip.extent) <- CRS(proj4string(WorldMap)) ##