I have images loading with some issue. I am using Panalleum library to load the images.
If I zoom out and see the same image, there you would see some small dots creating lines. This is related to Anti-Aliasing.
How can I fix this blurriness or lines on the image?
Related
Here, I have tried a various approach for loading a PDF to the canvas. First thing is I used the library PDF.JS to load the PDF in canvas. The problem I faced with PDF.JS is that when I try to zoom in to the PDF - [
I tried two approaches
Zooming in to the object and the canvas - which made browser crash in a certain point in scaling
Converting the image as a object and loading it to canvas using Fabric JS and zooming in to the object - which made the pixel to break while zooming in (scaling was not proper to a certain point while zooming in)]
So, suggest me some best way to upload a PDF in canvas with perfect scaling while zooming in without any crash to the browser when I upload some bigger size PDF.
Thanks In advance! :)
I don't know if you still need this, but I stumbled upon a tutorial a few days ago that exactly shows how to do your use case (if I understand it correctly and you're trying to zoom in). You can check it here:
tutorial
I have scanned my copybook and want to crop out extra white regions with Inkscape.
To achieve this, I import initial image (PDF) to Inkscape, draw appropriate rectangle, and use Object->Clip->Set to cut out needed region. Then I resize page to drawing and save obtained page as new PDF file through File->Save a Copy.
I expected that the size of the new PDF file (with cropped image) will be less than the size of the initial PDF (with image without crop), but they are the same.
What is the reason of this and may it be worked around?
I use Inkscape 0.91 at Linux Mint 18.2.
Thank you in advance.
Because the original image is still there, fully intact and with all its contents. The cropping rectangle are just instructions to the PDF viewer to crop out those regions when rendering the image.
However in Inkscape you can bake the crop rectangles and when exporting to PDF "apply raster effects" which should actually alter the contained image(s).
Description
Upon loading an image (gif/jpg/webp/png) the image flashes the background color then loads the image. I expect that the image would just load and only have a placeholder when the image takes a while to load.
This problem is irrelevant to the size of the image (img size 10kb). Even if the image loads immediately the background color flashes.
Reproduction
Essentially just load an image and replace it with another image on the same scene.
I have a git project with the issue where it flashes red:
https://github.com/dnam50/gifTry.git
A gif demonstrating https://user-images.githubusercontent.com/28775204/32446378-5eb5926e-c311-11e7-9afe-6c689a4280af.gif
Additional Information
Fresco version: [1.5.0]
Platform version: [nexus 6 api 25] but has been tried on numerous android devices.
I am aware of White Flash inbetween Re-rendering Image Views which is the same issue but I have added a code example and gif example.
Thanks
I have a PDF with a page with an image. I'm using a command line tool to extract this image. The page in the PDF shows only a part of the image, because the extracted image as a lot more "contents" and they are slightly rotated. This happens, I assume, because some sort of cropping and/or rotation was applied to the image when the PDF was built.
Is there anyway, using iText, to figure out the offset and rotation applied to the image? That would allow me to crop the extracted image in the same way and end up with something similar to what's visible on the PDF page.
My app downloads images from a website. These images are all manner of sizes, from 800x600 up to 1800x1600. I analyze the image using facial recognition, and then want to resize and crop the image. However, it's important that the detected CGRect be visible on the cropped image.
I was using the excellent UIImage+Resize code and using UIViewContentModeScaleAspectFill, but it doesn't seem to have a programatic way of specifying an arbitrary location that needs to be visible in the final image. So if a face is located at the 1600px range of an 1800x1600 image, it'll get cut off.
Is there an easy solution to this, or do I need to dig around in the depths of UIImage+Resize? Any guidance would be appreciated!