pillow

Saving an imshow-like image while preserving resolution

由 此生再无相见时 提交于 2020-01-29 03:25:31
问题 I have an (n, m) array that I've been visualizing with matplotlib.pyplot.imshow . I'd like to save this data in some type of raster graphics file (e.g. a png) so that: The colors are the ones shown with imshow Each element of the underlying array is exactly one pixel in the saved image -- meaning that if the underlying array is (n, m) elements, the image is NxM pixels. (I'm not interested in interpolation='nearest' in imshow .) There is nothing in the saved image except for the pixels

The niqqud are not aligned properly while drawing text in Hebrew using PIL (Python Imaging Library)

由 安稳与你 提交于 2020-01-23 02:26:25
问题 I'm using Pillow / PIL to draw hebrew letters with nikud. I noticed that the nikudim (plural for nikud) are not properly aligned and sometimes overlap other letters. Any suggested fix for this? I've tried a few fonts, and they all seem to have their own issues. Here's the code that I'm using. from bidi.algorithm import get_display from PIL import Image, ImageDraw, ImageFont fonts = [ ('Tammey FranckCLM', '/PATH/TO/FONT/TaameyFrankCLM-Medium.ttf'), ('Times New Roman', '/PATH/TO/FONT/Times New

Displaying uploaded images in the template - Django

由 不想你离开。 提交于 2020-01-22 17:01:30
问题 I am trying to display uploaded images to a template for my imaginary vegetable catalogue. I have a page to add a new vegetable and upload images. The main template is a list of vegetables which will later have thumbnails. Now, when viewing the detail page of the vegetable I want to display its images, but the template is only displaying the string 'VegetableImage Object' in place of an image, even with img tags. I am confused because the template has obviously found the images but they are

How to save images in specific file directories using Python PIL (Pillow) without getting a KeyError due to: save_handler = SAVE[format.upper()]

由 泄露秘密 提交于 2020-01-15 09:41:28
问题 I am trying to crop specific elements out of a larger image of the periodic table, then saving them in a specific file directory, this file directory is inside an additional folder, and this folder is in the same file directory as the program that I am trying to do this with. I have looked at another answered question on stack overflow that has similarities to my problem: How can I save an image with PIL? , however this user used 'numpy'. I have only previously learnt python basics in school

Is there a way to fallback for missing glyphs with PIL?

由 余生长醉 提交于 2020-01-15 03:43:10
问题 When rendering text using PIL (ImageFont, ImageDraw, etc.) if the font is missing a glyph for a particular character, it just skips that character. I don't see any mechanism in the docs for specifying a fallback font. Is there a tried-and-true recipe for using a fallback font for missing glyphs in PIL? 回答1: I couldn't figure out how to do this, but I did find a workaround. I used FontForge to fill in the missing glyphs in the main font, with backup glyphs from another font. As explained in

Python Export Excel Sheet Range as Image

由 社会主义新天地 提交于 2020-01-14 03:16:07
问题 So it seems there's something weird going on with PIL ImageGrab.grabclipboard() import win32com.client from PIL import ImageGrab o = win32com.client.Dispatch('Excel.Application') o.visible = False wb = o.Workbooks.Open(path) ws = wb.Worksheets['Global Dash'] ws.Range(ws.Cells(1,1),ws.Cells(66,16)).CopyPicture() img = ImageGrab.grabclipboard() imgFile = os.path.join(path_to_img,'test.jpg') img.save(imgFile) When I run this, I notice that if I ctrl-V , the image is actually correctly saved on

PUT request for image upload not working in django rest

由 こ雲淡風輕ζ 提交于 2020-01-13 08:01:26
问题 I am trying to upload an image in django rest using multipart/form-data in a PUT request and Pillow: class ABC(APIView): parser_classes = (MultiPartParser,) def put(self, request): a = Image() a.image_url = request.data["image"] a.save() class Image(models.Model): image_url = models.ImageField(upload_to='static/bills', blank=True) I make a request which is a PUT request and a multipart/form-data. I end up getting a response code of 400 with the message: { "detail": "Multipart form parse error

How to read image from numpy array into PIL Image?

由 天大地大妈咪最大 提交于 2020-01-11 08:24:21
问题 I am trying to read an image from a numpy array using PIL, by doing the following: from PIL import Image import numpy as np #img is a np array with shape (3,256,256) Image.fromarray(img) and am getting the following error: File "...Image.py", line 2155, in fromarray raise TypeError("Cannot handle this data type") I think this is because fromarray expects the shape to be (height, width, num_channels) however the array I have is in the shape (num_channels, height, width) as it is stored in this

Python——验证码识别 Pillow + tesseract-ocr

由 岁酱吖の 提交于 2020-01-08 09:05:02
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 简介 图片验证码识别的可以分为几个步骤，一般用 Pillow 库或 OpenCV 来实现，这几个过程是： 灰度处理&二值化 降噪 字符分割 标准化 识别 灰度化：在RGB模型中，如果R=G=B时，则彩色表示一种灰度颜色，其中R=G=B的值叫做灰度值，因此，灰度图像每个像素值只需一个字节存放灰度值（又称强度值、亮度值），灰度范围为0-255。 二值化：二值化可以把灰度图片转换成二值图像，把大于某个临界灰度值的像素灰度设置为灰度极大值，把小于这个值的像素灰度设为灰度极小值，从而实现二值化。 降噪就是把不需要的信息通通去除，比如背景，干扰线，干扰像素等等，只留下需要识别的字符，让图片变成2进制点阵，方便代入模型训练。 灰度处理： 灰度化：在RGB模型中，如果R=G=B时，则彩色表示一种灰度颜色，其中R=G=B的值叫做灰度值，因此，灰度图像每个像素值只需一个字节存放灰度值（又称强度值、亮度值），灰度范围为0-255。 from PIL import Image # 用于打开图片和对图片处理 def img_to_gray(path): """ 图片转灰度 :param path: :return: """ img = Image.open(path) img = img.convert('L') #转灰度 img

Import Image using Pillow : No module named 'PIL'

由 梦想的初衷 提交于 2020-01-07 03:17:06
问题 Several posts were advising to import Pillow using pip, after having uninstalled both PIL and Pillow, what i did : python -m pip uninstall Pillow (worked) python -m pip uninstall PIL (PIL was not installed) python -m pip install Pillow (worked, i guess it was fine already) Then, according to these posts, using "from PIL import Image" in python should work. I get the error "ImportError: No module named 'PIL'". I tried "import Image" and "from Pillow import Image" but none of that works either.
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