image – Make Me Engineer

get the last picture taken by user

// Find the last picture String[] projection = new String[]{ MediaStore.Images.ImageColumns._ID, MediaStore.Images.ImageColumns.DATA, MediaStore.Images.ImageColumns.BUCKET_DISPLAY_NAME, MediaStore.Images.ImageColumns.DATE_TAKEN, MediaStore.Images.ImageColumns.MIME_TYPE }; final Cursor cursor = getContext().getContentResolver() .query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, projection, null, null, MediaStore.Images.ImageColumns.DATE_TAKEN + ” DESC”); // Put it in the image view if (cursor.moveToFirst()) { final ImageView imageView = (ImageView) findViewById(R.id.pictureView); String imageLocation = cursor.getString(1); File imageFile = new File(imageLocation); if … Read more

Image upload using okHttp

You need to Use new MultipartBody.Builder() Instead of new MultipartBuilder() Its working

Controlling image load order in HTML

Use Javascript, and populate the image src properties later. The # tells the browser to link to a URL on the page, so no request will be sent to the server. (If the src property was empty, a request is still made to the server – not great.) Assemble an array of image addresses, and … Read more

Finding connected components in a pixel-array

Considering that the groups should never touch each other, you can use scipy.ndimage.measurements.label to label the groups: In [1]: import numpy as np In [2]: from scipy.ndimage.measurements import label In [3]: array = np.array(…) # your example In [4]: structure = np.ones((3, 3), dtype=np.int) # this defines the connection filter In [5]: structure # in … Read more

Change image in HTML page every few seconds

As I posted in the comment you don’t need to use both setTimeout() and setInterval(), moreover you have a syntax error too (the one extra }). Correct your code like this: (edited to add two functions to force the next/previous image to be shown) <!DOCTYPE html> <html> <head> <title>change picture</title> <script type = “text/javascript”> function … Read more

How to save a png from javascript variable

I know this question is 2 years old, but hopefully people will see this update. You can prompt the user to save an image in a base64 string (and also set the filename), without asking the user to do a right click var download = document.createElement(‘a’); download.href = dataURI; download.download = filename; download.click(); Example: var … Read more

How to convert getRGB(x,y) integer pixel to Color(r,g,b,a) in Java?

If I’m guessing right, what you get back is an unsigned integer of the form 0xAARRGGBB, so int b = (argb)&0xFF; int g = (argb>>8)&0xFF; int r = (argb>>16)&0xFF; int a = (argb>>24)&0xFF; would extract the color components. However, a quick look at the docs says that you can just do Color c = new … Read more

Can Android’s WebView automatically resize huge images?

Yes, it’s possible. You can try setting the WebView Layout using the code below. It resizes all Images (Greater than the Device Screen Width) to the Screen Width. This works for both Orientations (Portrait and Landscape) webview.getSettings().setLayoutAlgorithm(LayoutAlgorithm.SINGLE_COLUMN); You can add extra margins/padding later to get the spacing right.

How to remove all lines and borders in an image while keeping text programmatically?

Since no one has posted a complete OpenCV solution, here’s a simple approach Obtain binary image. Load the image, convert to grayscale, and Otsu’s threshold Remove horizontal lines. We create a horizontal shaped kernel with cv2.getStructuringElement() then find contours and remove the lines with cv2.drawContours() Remove vertical lines. We do the same operation but with … Read more

Change iPhone UISlider bar image

You were right to use -setMinimumTrackImage:forState: and -setMaximumTrackImage:forState: methods. What you missed is that you should provide stretchable UIImage to them, the rest is taken care of automagically: UIImage *sliderLeftTrackImage = [[UIImage imageNamed: @”SliderMin.png”] stretchableImageWithLeftCapWidth: 9 topCapHeight: 0]; UIImage *sliderRightTrackImage = [[UIImage imageNamed: @”SliderMax.png”] stretchableImageWithLeftCapWidth: 9 topCapHeight: 0]; [mySlider setMinimumTrackImage: sliderLeftTrackImage forState: UIControlStateNormal]; [mySlider setMaximumTrackImage: … Read more

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