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在Django里展示图片

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	`1`	`+`
	`2`	`+`
	`3`	`+- 参考`
	`4`	`+ - [Creating a face detection API with Python and OpenCV (in just 5 minutes)](https://www.pyimagesearch.com/2015/05/11/creating-a-face-detection-api-with-python-and-opencv-in-just-5-minutes/)`
	`5`	`+ - [How to stream opencv frame with django frame in realtime?](https://stackoverflow.com/questions/45906482/how-to-stream-opencv-frame-with-django-frame-in-realtime)`

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	`1`	`+## 在Django里展示图片`
	`2`	`+`
	`3`	`+- 定义路径`
	`4`	+```python
	`5`	`+from django.conf.urls import url`
	`6`	`+`
	`7`	`+from .views import cvtest`
	`8`	`+`
	`9`	`+`
	`10`	`+urlpatterns = {`
	`11`	`+ url(r'^display_image$', cvtest.display_image, name='display_image'),`
	`12`	`+`
	`13`	`+}`
	`14`	`+`
	`15`	+```
	`16`	`+`
	`17`	`+- 编写视图`
	`18`	+```python
	`19`	`+from django.http import HttpResponse`
	`20`	`+import cv2`
	`21`	`+`
	`22`	`+`
	`23`	`+def display_image(request):`
	`24`	`+ fn = '/Users/play/Desktop/114311.jpg'`
	`25`	`+ img = cv2.imread(fn)`
	`26`	`+ img[:, :, 2] = 0 # 对图片进行处理`
	`27`	`+ ret, jpeg = cv2.imencode('.jpg', img)`
	`28`	`+ return HttpResponse(jpeg.tostring(), content_type="multipart/x-mixed-replace")`
	`29`	`+`
	`30`	+```
	`31`	`+- 在浏览器里访问`
	`32`	`+ - http://0.0.0.0:8000/test/display_image`
	`33`	`+ - ![display_image](display_image.jpg "display_image")`
	`34`	`+`
	`35`	`+- 在网页里引用`
	`36`	`+ - ![display_image](cv_html.png "display_image")`
	`37`	+```html
	`38`	`+<img src='/test/display_image'></img>`
	`39`	+```
	`40`	`+`

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