https://github.com/deishelon/picassoblurtransformation
A fast way to blur an image for Picasso
https://github.com/deishelon/picassoblurtransformation
android blur blurview picasso transformation transformations
Last synced: 2 months ago
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A fast way to blur an image for Picasso
- Host: GitHub
- URL: https://github.com/deishelon/picassoblurtransformation
- Owner: Deishelon
- License: mit
- Created: 2018-05-31T06:52:14.000Z (almost 7 years ago)
- Default Branch: master
- Last Pushed: 2018-05-31T07:03:18.000Z (almost 7 years ago)
- Last Synced: 2025-01-18T17:29:13.305Z (4 months ago)
- Topics: android, blur, blurview, picasso, transformation, transformations
- Language: Kotlin
- Homepage:
- Size: 194 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# Blur for Picasso (Android)
- Simple Transformation class to blur an image for Picasso
- Blur time: 1-3 ms*
## Usage
#### Step 1 (Add BlurTransform class to your project)
#### Step 2 (Add to Picasso)
```
Picasso.get().load(YOUR_URL).transform(BlurTransform(scale = 0.1f,radius = 1)).into(YOUR_IMAGE_VIEW)
```
## Docs & Performace & Sample Screenshots
#### Docs
BlurTransform takes 2 parameters
- scale
- radius
###### Scale - scales your bitmap using this formula
```
val width = Math.round(sentBitmap.width * scale)
val height = Math.round(sentBitmap.height * scale)
```
It is recommened not to pass a number higher then 1 (your origial bitmap size), as it will requere extra time to prosses & huge memory allocations
Additional notes:
You can't pass 0, as this will thow an exeption.
###### Radius - radius to blur out pixels
Higher the number - more blur
Very high numbers will increase prossesing time
It is recomened to keep your number between 1 and 50
You can not pass 0, as this will thow an exeption.
#### Screenhots
| Scale | Radius | Output |
| ------------ | ------------ | ------------ |
| 0.1 | 1 | Add image |
| 0.1 | 10 | Add image |
| 0.5 | 5 | Add image |
#### Performace
*Time is milliseconds
*Big bitmaps were used for performnce test (width = 5000px, height = 3000px)
##### Normal usage (down-scale bitmap) Recommended
| | | | | | |
| ------------ | ------------ | ------------ | ------------ | ------------ | ------------ |
| Scale | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Radius | 1 | 10 | 20 | 50 | 100 |
| Time | 3 | 6 | 15 | 16 | 35|
It is recommened to use scale between 0.1 and 1
**The Best Performace Between 0.1 And 0.5**
###### No scale, x1
| | | | | | |
| ------------ | ------------ | ------------ | ------------ | ------------ | ------------ |
| Scale | 1 | 1 | 1 | 1 | 1 |
| Radius | 1 | 10 | 20 | 50 | 100 |
| Time | 48 | 52 | 57 | 82 | 117|
###### Crazy usage, bitmap scaled x5 (not recommened), just for comparisin
| | | | | | |
| ------------ | ------------ | ------------ | ------------ | ------------ | ------------ |
| Scale | 5 | 5 | 5 | 5 | 5 |
| Radius | 1 | 10 | 20 | 50 | 100 |
| Time | 766 | 886 | 1054 | 1443 | 1581|
Test device: Huawei P9
Android OS: 7.0