wand

I spent whole day on this problem and did not see answer in stack overflow! I tried this but did not work: >> pil_image = Image.frombytes('RGBA', wand_image.size, wand_image.make_blob(format='png'), 'raw') ValueError: not enough image data I appreciate every solution. This worked for me: img_buffer = numpy.asarray(bytearray(wand_img.make_blob(format='png')), dtype='uint8') bytesio = io.BytesIO(img_buffer) pil_img = PIL.Image.open(bytesio) 来源： https://stackoverflow.com/questions/52536843/how-to-convert-wand-image-image-to-pil-image

Is there way to convert a png file into SVG file using only pure python or a python module such as wand? To be more precise, I want to convert a png into a real vector graphics, I don't want to embed a bitmap inside the svg, I want to convert into graphics code. I know this is possible with Illustrator or Inkscape, but I need an automated process. Thank you ! You will need to run an external program to do the image tracing. A popular program is potrace. It is what Inkscape uses to perform the task. There are some python bindings for it: https://pypi.python.org/pypi/pypotrace chrarndt I'm using

I want to resize and optimize png and jpg image size using wand. With PIL, I'm able to save the same image with about a 3rd of the size if I specify the optimize option. with open(filename, 'rb') as f: pimage = PImage.open(f) resized_pimage = pimage.resize((scaled_width, scaled_height), PImage.ANTIALIAS) bytes_buffer = io.BytesIO() resized_pimage.save(bytes_buffer, format="PNG", optimize=True) However, I'm not sure what the equivalent option for Wand is: with default_storage.open(filename, 'rb') as f: img = WImage(file=f) img.resize(width=scaled_width, height=scaled_height, filter='gaussian')

I want to convert an image so I can read it better using pyocr & tesseract. The Command line I want to convert to python is : convert pic.png -background white -flatten -resize 300% pic_2.png Using python Wand I managed to resize it but I don't know how to do the flattend and the white background My try : from wand.image import Image with Image(filename='pic.png') as image: image.resize(270, 33) #Can I use 300% directly ? image.save(filename='pic2.png') Please help Edit, Here is the image to make tests on : For resize & background. Use the following, and note that you'll need to calculate the

Trying to load a PDF from the local file system and getting a "not authorized" error. "File "/env/local/lib/python3.7/site-packages/wand/image.py", line 4896, in read self.raise_exception() File "/env/local/lib/python3.7/site-packages/wand/resource.py", line 222, in raise_exception raise e wand.exceptions.PolicyError: not authorized `/tmp/tmp_iq12nws' @ error/constitute.c/ReadImage/412 The PDF file is successfully saved to the local 'server' from GCS but won't be loaded by Wand. Loading images into OpenCV isn't an issue, just happening when trying to load PDFs using Wand/ImageMagick Code to

For subsequent processing purposes, in python I am converting a multi-page PDF ( f ) into JPEGs ( temp?.jpg ): import os from wand.image import Image as wimage with wimage(filename=f,resolution=300) as img: for i in range(len(img.sequence)): ftemp=os.path.abspath('temp%i.jpg'%i) img_to_save=wimage(img.sequence[i]) img_to_save.compression_quality = 100 img_to_save.format='jpeg' img_to_save.save(filename=ftemp) I am using wand because of its ability to sequence the PDF pages, but am open to PIL etc. I need the resolution and compression_quality to be as high as possible, but I want each JPEG to

I am facing the issue while converting pdf to image using Wand: E wand.exceptions.PolicyError: not authorized `/opt/sample.pdf' @ error/constitute.c/ReadImage/412 I have already visited the previous stack overflow question here: convert:not authorized `aaaa` @ error/constitute.c/ReadImage/453 Here is my code def build_image(self, pdf_path, img_path): with wand.image.Image(filename=pdf_path) as img: img.save(filename=img_path) My code was working form last 6 months. now why i am getting error. Please help. This is probably due to an security fix of the underlaying package (see https://bugs