Covert a thumb image to a big blurred image.
The thumb image file size is small then the blur image one.
This can improve on your network time performance.
| THUMB BLUR | DIRECT BLUR |
|---|---|
| origin(webp 33K) | origin(webp 33K) |
 |
|
| thumb(3,800B) | direct |
|
|
| thumb then resize then blurred | blur directly(5,302B) |
 |
 |
Dont test performance on your simulator theres no GPU support.
Try on my iPhone 6 . I got this:
8-30 ms for a (320,213)pic
2016-08-18 13:11:09.880 testBlurUrl[5403:4840131] image 'test.webp' not found
2016-08-18 13:11:09.885 testBlurUrl[5403:4840131] using image 'test.jpg'
2016-08-18 13:11:09.886 testBlurUrl[5403:4840131] image size = (320,213)
2016-08-18 13:11:13.887 testBlurUrl[5403:4840131] begin 1471497073887
2016-08-18 13:11:13.917 testBlurUrl[5403:4840162] end 1471497073917 , used 30ms
2016-08-18 13:11:17.021 testBlurUrl[5403:4840131] begin 1471497077021
2016-08-18 13:11:17.039 testBlurUrl[5403:4840162] end 1471497077039 , used 18ms
2016-08-18 13:11:18.240 testBlurUrl[5403:4840131] begin 1471497078240
2016-08-18 13:11:18.259 testBlurUrl[5403:4840163] end 1471497078259 , used 19ms
2016-08-18 13:11:19.506 testBlurUrl[5403:4840131] begin 1471497079506
2016-08-18 13:11:19.514 testBlurUrl[5403:4840162] end 1471497079514 , used 8ms
2016-08-18 13:11:20.473 testBlurUrl[5403:4840131] begin 1471497080473
2016-08-18 13:11:20.481 testBlurUrl[5403:4840163] end 1471497080481 , used 8ms
2016-08-18 13:11:21.157 testBlurUrl[5403:4840131] begin 1471497081157
2016-08-18 13:11:21.166 testBlurUrl[5403:4840155] end 1471497081166 , used 9ms
2016-08-18 13:11:21.758 testBlurUrl[5403:4840131] begin 1471497081758
2016-08-18 13:11:21.768 testBlurUrl[5403:4840155] end 1471497081768 , used 10ms
2016-08-18 13:11:22.641 testBlurUrl[5403:4840131] begin 1471497082641
2016-08-18 13:11:22.649 testBlurUrl[5403:4840162] end 1471497082649 , used 8ms