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<p>
  warpAffine함수를 사용하여 이미지를 이동 및 회전하는 방법을 다루고 있습니다.
</p>



<p>
  마지막 업데이트 – 2018. 10. 3
</p>







<p>
  translation matrix를 사용하여 x축 방향 및 y축 방향으로 이미지를 이동시킵니다.
</p>



<figure><img data-lazy-fallback="1" data-attachment-id="5760" data-permalink="https://webnautes.blog/5759/word-image-5759-1/" data-orig-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-1.png?fit=310%2C162&amp;ssl=1" data-orig-size="310,162" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="word-image-5759-1" data-image-description="" data-image-caption="" data-medium-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-1.png?fit=300%2C157&amp;ssl=1" data-large-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-1.png?fit=310%2C162&amp;ssl=1" decoding="async" fetchpriority="high" width="310" height="162" src="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-1.png?resize=310%2C162&amp;ssl=1" alt="" sizes="(max-width: 310px) 100vw, 310px" data-recalc-dims="1" data-old-src="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-1.png?resize=310%2C162&amp;is-pending-load=1#038;ssl=1" data-lazy-srcset="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-1.png?w=310&amp;ssl=1 310w, https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-1.png?resize=300%2C157&amp;ssl=1 300w"></figure>



<figure><img data-lazy-fallback="1" data-attachment-id="5761" data-permalink="https://webnautes.blog/5759/word-image-5759-2/" data-orig-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-2.png?fit=1003%2C733&amp;ssl=1" data-orig-size="1003,733" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="word-image-5759-2" data-image-description="" data-image-caption="" data-medium-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-2.png?fit=300%2C219&amp;ssl=1" data-large-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-2.png?fit=1003%2C733&amp;ssl=1" decoding="async" width="1003" height="733" src="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-2.png?resize=1003%2C733&amp;ssl=1" alt="" sizes="(max-width: 1003px) 100vw, 1003px" data-recalc-dims="1" data-old-src="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-2.png?resize=1003%2C733&amp;is-pending-load=1#038;ssl=1" data-lazy-srcset="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-2.png?w=1003&amp;ssl=1 1003w, https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-2.png?resize=300%2C219&amp;ssl=1 300w, https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-2.png?resize=768%2C561&amp;ssl=1 768w"></figure>







<p>
  rotation matrix를 사용하여 이미지를 회전시킵니다.
</p>



<figure><img data-lazy-fallback="1" data-attachment-id="5762" data-permalink="https://webnautes.blog/5759/word-image-5759-3/" data-orig-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-3.png?fit=364%2C132&amp;ssl=1" data-orig-size="364,132" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="word-image-5759-3" data-image-description="" data-image-caption="" data-medium-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-3.png?fit=300%2C109&amp;ssl=1" data-large-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-3.png?fit=364%2C132&amp;ssl=1" decoding="async" width="364" height="132" src="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-3.png?resize=364%2C132&amp;ssl=1" alt="" sizes="(max-width: 364px) 100vw, 364px" data-recalc-dims="1" data-old-src="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-3.png?resize=364%2C132&amp;is-pending-load=1#038;ssl=1" data-lazy-srcset="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-3.png?w=364&amp;ssl=1 364w, https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-3.png?resize=300%2C109&amp;ssl=1 300w"></figure>







<p>
  OpenCV의 getRotationMatrix2D 함수는 배율 및 회전 중심 좌표가 추가된 rotation matrix를 사용합니다.
</p>



<figure><img data-lazy-fallback="1" data-attachment-id="5763" data-permalink="https://webnautes.blog/5759/word-image-5759-4/" data-orig-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-4.png?fit=375%2C166&amp;ssl=1" data-orig-size="375,166" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="word-image-5759-4" data-image-description="" data-image-caption="" data-medium-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-4.png?fit=300%2C133&amp;ssl=1" data-large-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-4.png?fit=375%2C166&amp;ssl=1" decoding="async" loading="lazy" width="375" height="166" src="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-4.png?resize=375%2C166&amp;ssl=1" alt="" sizes="(max-width: 375px) 100vw, 375px" data-recalc-dims="1" data-old-src="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-4.png?resize=375%2C166&amp;is-pending-load=1#038;ssl=1" data-lazy-srcset="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-4.png?w=375&amp;ssl=1 375w, https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-4.png?resize=300%2C133&amp;ssl=1 300w"></figure>



<figure><img data-lazy-fallback="1" data-attachment-id="5764" data-permalink="https://webnautes.blog/5759/word-image-5759-5/" data-orig-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-5.png?fit=1003%2C1033&amp;ssl=1" data-orig-size="1003,1033" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="word-image-5759-5" data-image-description="" data-image-caption="" data-medium-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-5.png?fit=291%2C300&amp;ssl=1" data-large-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-5.png?fit=994%2C1024&amp;ssl=1" decoding="async" loading="lazy" width="1003" height="1033" src="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-5.png?resize=1003%2C1033&amp;ssl=1" alt="" sizes="(max-width: 1003px) 100vw, 1003px" data-recalc-dims="1" data-old-src="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-5.png?resize=1003%2C1033&amp;is-pending-load=1#038;ssl=1" data-lazy-srcset="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-5.png?w=1003&amp;ssl=1 1003w, https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-5.png?resize=291%2C300&amp;ssl=1 291w, https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-5.png?resize=994%2C1024&amp;ssl=1 994w, https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/word-image-5759-5.png?resize=768%2C791&amp;ssl=1 768w"></figure>







<p>
  테스트에 사용한 전체 코드입니다.
</p>



<pre><code>import numpy as np
import cv2


# 원본 이미지
img_source = cv2.imread('cat.jpg')
cv2.imshow("original", img_source)

cv2.waitKey(0)


# 이미지 이동
height, width = img_source.shape[:2]
M = np.float32([[1, 0, 100], [0, 1, 25]]) # 이미지를 오른쪽으로 100, 아래로 25 이동시킵니다.
img_translation = cv2.warpAffine(img_source, M, (width,height))
cv2.imshow("translation", img_translation)

cv2.waitKey(0)


# 이미지 회전
M = cv2.getRotationMatrix2D((width/2.0, height/2.0), #회전 중심
                            45, # 회전각도(양수 반시계방향, 음수 시계방향)
                            1) # 이미지 배율
img_rotation = cv2.warpAffine(img_source, M, (width, height))
cv2.imshow("rotation", img_rotation)

cv2.waitKey(0)


cv2.destroyAllWindows()</code></pre>





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warpAffine함수를 사용하여 이미지를 이동 및 회전하는 방법을 다루고 있습니다. 마지막 업데이트 – 2018. 10. 3 translation matrix를 사용하여 x축 방향 및 y축 방향으로 이미지를 이동시킵니다. rotation matrix를 사용하여 이미지를 회전시킵니다. OpenCV의 getRotationMatrix2D 함수는 배율 및 회전 중심 좌표가 추가된 rotation matrix를 사용합니다. 테스트에 사용한 전체 코드입니다.
The post OpenCV Python 강좌 – 이미지 이동 / 회전 하기 first appeared on 멈춤보단 천천히라도.

OpenCV Python 강좌 – 이미지 이동 / 회전 하기

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