Firefox not displaying larger image thumbnail >15MB image
I am expecting it needs to be done with blob not with the data:image
Related
I am trying to share the following blog post on twitter.
https://theramblingmind.com/2020/06/20/edhayaum-our-thadavai-by-rajesh-kumar/
The shared URL on twitter looks as follows.
https://twitter.com/Jagannathan6/status/1274382615034785792
However, the large image displayed in twitter is cropped and the only the lower half is displayed correctly.
Your image is not in the correct dimensions for a summary large image card:
A URL to a unique image representing the content of the page. You
should not use a generic image such as your website logo, author
photo, or other image that spans multiple pages. Images for this Card
support an aspect ratio of 2:1 with minimum dimensions of 300x157 or
maximum of 4096x4096 pixels. Images must be less than 5MB in size.
JPG, PNG, WEBP and GIF formats are supported. Only the first frame of
an animated GIF will be used. SVG is not supported.
You'll need to provide an image that is in 2:1 (landscape) ratio.
We are trying to process input image(attached-portion of image is masked becuase of sensitive data) using open cv 3.4.2-1 and getting output with full black colour. Please check attached output image . Please suggest how we can improve the quality to processed image to remove or corp the white space and get only that ID card portion of the image. Because after this,the image will be processed for OCR. Currently due to bad output image OCR failes completely.
Input image -maskes the portion of image
Output image
I am displaying image thumbnails from urls(which are in json file) into custom cells of a tableview.
The images loaded from url are not showing up properly- they are of a resolution much higher than need and some are of much lower resolution.
How do I manipulate these images so that they are scaled properly as per each screen(retina as well as normal) in iphone?
How do I scale and resize the thumbnail images from url?
Unless you care about other issues like memory or disk usage (for some caching) for the images, you don't have to resize them.
You can use UIViewContentModeScaleAspectFit as contentMode for an UIImageView and just set an image for the image view. It would be sufficient for you.
I'm working on a toy JS project to apply filters to an image.
If I do the following:
add an image to a page via FileReader and Drag and Drop
apply said image to a maximum height/width of 500px canvas element via drawImage
apply changes to said canvas via putImageData
save the canvas via Canvas2Image
will the saved image be the size of the canvas element or the original image dimensions?
The mage you create from canvas will always be at the size of the canvas. The canvas does not know what you draw into it so the original size of the image does not matter.
I don't know what Canvas2Image will do to the resulting image, but you can simply extract the canvas as an image using:
var dataUri = canvas.toDataURL('image/jpeg');
This will save the image at the size the canvas is at (I assume Canvas2Image will do the same where it can or simulate this approach for bmp formats etc.).
To prompt the user to save the dataUri as an image please see my earlier answer here.
I'm using Nimbus to display a photo album with scrubber and zoomable image view. I use network images, and display a thumbnail until the final image is loaded. NIPhotoAlbumScrollView provides the method didLoadPhoto:atIndex:photoSize: to accomplish exactly that.
From the source code comments, the NIPhotoScrollView should support that "image crisping effect" - showing thumbnail and when full-size image is loaded, sharpen the image without loosing the zoom state.
This feature seems broken though. When the thumbnail is loaded, it is displayed in its 1:1 pixel size, which is very small on screen. When the full-size image is loaded, it is also loaded in its 1:1 pixel size (if smaller than the available view size), which makes the image visually jump bigger.
Any idea on how to fix that issue?
Note that I tried both with a full sized image with dimensions bigger or smaller than the size of the NIToolbarPhotoViewController on screen.
you may already be doing this, but one thing to make certain:
where you implement photoAlbumScrollView:photoAtIndex:photoSize:isLoading:originalPhotoDimensions: for protocol NIPhotoAlbumScrollViewDataSource, you must do the following, as mentioned in these comments in the source:
* If you have a thumbnail in memory but not the full-size image yet, then you should return
* the thumbnail, set isLoading to YES, and set photoSize to NIPhotoScrollViewPhotoSizeThumbnail.