# I succeeded to Spectral Saliency Map. But ...

**URL:** <https://discourse.julialang.org/t/i-succeeded-to-spectral-saliency-map-but/22458>\
**Category:** Signal and Image Processing\
**Created:** [March 28, 2019, 1:33pm UTC](https://discourse.julialang.org/t/i-succeeded-to-spectral-saliency-map-but/22458 "2019-03-28T13:33:49Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![bemorejul](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/bemorejul/32/7643_2.png) [@bemorejul](https://discourse.julialang.org/u/bemorejul)\
**Post date:** [March 28, 2019, 1:33pm UTC](https://discourse.julialang.org/t/i-succeeded-to-spectral-saliency-map-but/22458/1 "2019-03-28T13:33:49Z")

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Hi, all.

I succeeded to making Spectral Saliency Map. But …

The result map is flipped to vertically.

Why this happen?

Julia’s FFT function is different from matlab?

 ![31](https://global.discourse-cdn.com/julialang/original/3X/5/5/55109561b9764d6addfa8d08f28924f0583e068d.jpeg)

I wonder …