Instafilter | PHP library for working with ImageMagick
kandi X-RAY | Instafilter Summary
kandi X-RAY | Instafilter Summary
Replicate Instragram-style filters in PHP. Translates photoshop functions to PHP.
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Top functions reviewed by kandi - BETA
- Resize the image .
- Load an image
- Executes the program
- Add brightness contrast
- Convert a number .
- Generates an image levels
- Run the queue
- Add a vignette to the image .
- Apply filter .
Instafilter Key Features
Instafilter Examples and Code Snippets
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Trending Discussions on Instafilter
QUESTION
The below code apply an image Picker and showing filtered image in contentView, in this case I used SepiaTone effect. When I do the movements in slider, to change the filter intensity. The photo react delay and the sliding is not fluent.
But when using some apps from App Store like "Afterlight", with their photo filter, the changing to photo effect is smoothly when a user moves a slider.
So what is the different, is those apps use other framework? How could we improve the performance on continuously changing filter intensity if we still use Core Image?
ImagePicker ...ANSWER
Answered 2020-May-21 at 20:10It helps to perform the image filter in a background thread to not block the main queue with the image processing. Also, it would make sense to not react to every single change but to debounce changes: wait for a short amount like 50ms of no change before the actual computation is done - this prevents a large number of image computations to happen if the filter params change often in a short time (like when the user drags the slider around). Both can be achieved using the Combine framework, here is an example based on your code. The effect is separated in a separate class ImageEffect
that uses Combine to perform the image processing in the background whenever inputImage/filterIntensity changes, optimized using the debounce operator:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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