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How to implement a box or gaussian blur on iOS
(7 answers)
Closed 9 years ago.
I have browsed stack for this so common issue, and have found that there is no default function to add blur effect to UIImage, and in order to make it one would have to manipulate individual pixels... I presume there are many advanced users who have tried and accomplished this. Does anyone have code to this, or some really specific pointers how this should be done?
Here's an iOS image filter library which you could possibly use.
https://github.com/esilverberg/ios-image-filters
an other one could be this: Filtrr for iOS
Related
This question already has an answer here:
Drawing overlay view on top of a web view
(1 answer)
Closed 9 years ago.
I am trying to write an app that shows a PDF and allows a user to scribble all over it with their finger and then save the "annotated" pdf on close, seeing their changes again when they reopen the app.
Currently, I have thrown a UIWebview Up and tried to put a UIView over the top of it as a drawing layer.
Is this the best approach? is there an answer already out there? Any examples?
Thanks.
Yes, putting a transparent UIView on top and painting the users touches in this one is what I would do too.
Maybe this project can help you.
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
How to apply “filters” to AVCaptureVideoPreviewLayer
Hello i want to use various effect and filters in my camera application Effects include sepia, black and white,Anaglyph, swirl, neon light, rainbow, emboss, any tutorials ,example please help
Thanks in Advance
Brad Larson's GPUImage framework provides a large number of GPU accelerated effects. Just integrate the GPUImage framework into your project and use the filters as you need. It's easy to implement.
Tutorial
http://www.raywenderlich.com/5689/beginning-core-image-in-ios-5
You have to use Core Image Filter Reference there is option that you can even change color of each pixel..
https://developer.apple.com/library/mac/#documentation/GraphicsImaging/Reference/CoreImageFilterReference/Reference/reference.html
Hope this will help you...
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
How to give sketch effect on image in iphone?
Hi all,
I am a newbie.
I've tried solve to my problem. I'm Working on Photo Sketching Apps. But don't know how to get Proper Photo Sketching images.
So how can I get a proper Pencil Sketching effect? Here are some example images.
Kindly guide me a way.
Thanks in advance.
Core Image filters are probably the best way to go, CILineOverlay and CIEdgeWork when blended together could give the effect you are after. http://developer.apple.com/library/ios/#documentation/GraphicsImaging/Reference/CoreImageFilterReference/.
(From another answer of mine)
This question already has answers here:
How to send objects in NIB files to front/back?
(6 answers)
Closed 9 years ago.
I know this is simple, but i cannot get one of my object behind the other. I looked for bring to Front, or some kind of index similar to z-index in CSS. I couldn't find anything.
It is a little bit hidden, but it is there ;)
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
iOS Capture “screenshot” of camera controller
I'm trying to take a screenshot when the camera of the iphone is running, I want to do this because my goal is to take a lot of screenshot and send them to a server with POST methods to simulate a streaming.
I tried a lot of methods but every time I get a blank image.
I'm french so I'm sorry if my english is bad, and thank you in advance for the help.
add transparant UIView on camera view through overlaying.and then take screenshot from that view.pls check this link