June 2018
Beginner to intermediate
304 pages
7h 38m
Korean
Content preview from 우아한 사이파이: 수학, 과학, 엔지니어링을 위한 파이썬 데이터 분석 라이브러리 SciPy
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232
우아한 사이파이
그림
7-2
가우시안 피라미드의 다양한 레벨을 적용한 평균 제곱 오차와 이동
이동(
Shirt
)
평균 제곱 오차
(
MSE
)
레벨
8
레벨
7
레벨
6
레벨
5
레벨
4
레벨
3
레벨
2
레벨
1
7.2
이미지 등록 최적화
세 매개변수로 이미지 정렬을 자동화해보자 (회전, 행 차원 변환, 열 차원 변환 ). 이 과정을 ‘고
정 등록
rigid
registration
’이라고 한다. 이미지 확대/축소와 왜곡 및 늘리기와 같은 변형이 없기 때문
이다. 사물은 단단한 고체로 간주되고 원본과의 일치될 때까지 이미지 주변을 이동 (회전 포함 )
한다.
사이킷-이미지 변환 모듈을 사용하여 이미지의 이동 및 회전을 계산해 코드를 단순화했다. 사
이파이의 최적화 모듈에서 입력 매개변수로 벡터가 필요하다. 먼저 벡터를 구하여 올바른 매개
변수를 취한 후, 고정 변형을 생성하는 함수를 작성한다.
from
skimage
import
transform
def
make
_
rigid
_
transform
(
param
):
r
,
tc
,
tr
=
param
return
transform
.
SimilarityTransform
(
rotation
=
r
,
translation
=(
tc
,
tr
))
rotated
=
transform
.
rotate
(
astronaut
,
45
)
233
7
장
사이파이 함수 최적화
fig
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.