Saving a Numpy array as an image (instructions)

I found my answer in a previous post: https://stackoverflow.com/questions/902761/saving-a-numpy-array-as-an-image. The only problem being, there isn't much instruction on using the PyPNG...

Horizontal flip of Image on Python with pypng

I am trying to horizontally flip an image (from left to right) on Python using PyPNG, I have written the following codes but it does not seem to work, anybody have any idea what I'm doing wrong...

scipy: savefig without frames, axes, only content

In numpy/scipy I have an image stored in an array. I can display it, I want to save it using savefig without any borders, axes, labels, titles,... Just pure image, nothing else. I want to avoid...

PyPNG to draw a simple filled box

I am trying to draw a simple 256x256 pixel RGBA square using python's png module. I'd like to use the png.Writer function and I imagine I'd have to draw it out using the write() method. I have...

Representing and solving a maze given an image

What is the best way to represent and solve a maze given an image? Given an JPEG image (as seen above), what's the best way to read it in, parse it into some data structure and solve the maze? My...

Iterative writing with PyPNG

I was wondering if there is a way to iteratively write png files using PyPNG (as in, row-by-row, or chunk-by-chunk) without providing the png.Writer() with the entire data. I've looked through the...

How to install the png module in python

I'm kind of new to installing modules in python. I looked at this, http://pythonhosted.org/pypng/png.html#png.Reader.asRGB8 But there is no download link. It says "installation is trivial" but...

PythonAnywhere Scheduled Tasks import error

I want to send push notifications to my users hourly. from push_notifications.models import APNSDevice print('test schedule task') device = APNSDevice.objects.all() if device is None: ...

Dockerize existing Django project

I can't wrap my head around how to dockerize existing Django app. I've read this official manual by Docker explaining how to create Django project during the creation of Docker image, but what I...

Python: Extract Metadata from PNG

I am able to extract the necessary information using R, but for consistency within the overall project, I would like to be able to do it with Python (preferably Python3). I need the contents of a...

PyPNG fails to make image with 32-bit array input

starting with ML and wrote an Classifier. Now i want to convert 2D arrays back to an image if the classifier gives out an false value. I use PyPNG and i am getting...

Convert .h5 file to .jpg with Python

I currently have a .h5 file containing grayscale imagery. I need to convert it to a .jpg. Does anybody have any experience with this? Note: I could possible convert the h5 file to a numpy array...

convert pypng to numpy array

I'm trying to convert pypng data struct to a numpy array (with PIL, you can just call numpy.array(img) and it works), but I'm not sure how to do it with pypng. I need to work with 48 bit images,...

Can't create an image from an url with pypng

I'm very new to pypng and with python itself, I've been working on a weather api program which is supposed to fetch an image from openweathermap.org. I've googled for hours and can't seem to find...

KeyError: 'collectstatic' When deploying the Django application to pythonanywhere

During the implementation of my Django application on pythonanywhere for the first time I encountered such an error. Previous applications with a very similar structure were able to be implemented...

Import Pybind11/C++ compiled module not working

I'm fairly new to python setuptools and dist. I can't seem to get a c++ wrapper module to import so that I may use the functions. The compiled .so file shows up in the installed-files.txt after...

Generate a PNG QRCode using Python

I am trying to create a .png of a QRCode using Python. However, I am having difficulty. When I run this code: import tkinter as tk from PIL import Image,ImageTk import pyqrcode from tkinter.font...

Saving a 3D 32bit floatarray to a 48bit integer PNG in Python to match Kitti Ground Truth Format

Kitti has a benchmark for Optical Flow. They require the flow estimate to be 48bit PNG files to match the format of the ground truth files they have. Ground Truth PNG Image is available for...

Rasa init cannot be executed

my rasa init --no-prompt is throwing some import error ImportError: This version of TensorFlow Probability requires TensorFlow version >= 1.14; Detected an installation of version 1.13.2. Please...

Using python 3.7.3, I want to have base64 encoded photo and resize it without saving to file to disk and reopening the file using Image.open()

Sorry about the long post in advance. Using Python 3.7.3, I want to have base64 encoded photo and resize it without saving to file to disk and reopening the file using Image.open(). I've looked...

Python add noise to image breaks PNG

I'm trying to create a image system in Python 3 to be used in a web app. The idea is to load an image from disk and add some random noise to it. When I try this, I get what looks like a totally...

Read the IDAT of a PNG file with Python

my PNG 10x10 picture for the test Hi everybody, I try to make a Python script that reads/writes a PNG file. I don't need a full option script. In this test, no compression, no filter, no...

ImportError: cannot import name 'downsample' while importing lasagne in python 3.6

I am getting the above error with the following import statements on Google Colab GPU: import argparse #import cPickle import _pickle as cPickle import time import os import numpy as np import...

Python Behave tests not running on bitBucket CI

We have a Simple Python Behave based test suite. It runs fine on local environment. Command used to run test: pip3 install -r requirements.txt behave -D...

Convert 24-bit PNG files to 8-bit color indexed images with pypng

I'm trying to write a python script that takes in standard 24-bit pngs and converts them to 8-bit pngs for better compression. It looks like pypng can do this but I can't quite figure out how to...

What is the best Scala library for writing/reading PNG image files?

What is the best Scala library for writing/reading PNG image files? I'm looking for the Scala-equivalent of libpng (c++) and pypng (Python)

Convert image's bit depth with PyPng

Ok, so I just started python and I need to convert an image to 4bpp for a tool, and I came across pypng, but I couldn't find how to only convert to a bit depth of 4, so this is my result from...

Error PackagesNotFoundError: The following packages are not available from current channels for Pypi packages

I am trying to create a conda env conda create --name sf-prj-final --file requirements.txt But I have encountered error says: PackagesNotFoundError: The following packages are not available from...

Save 16-bit numpy arrays as 16-bit PNG image

I'm trying to save a 16-bit numpy array as a 16-bit PNG but what I obtain is only a black picture. I put here a minimum example of what I'm talking aboout. im = np.random.randint(low=1, high=6536,...

Sudden Tensorflow / Keras Google Colab dependency problems `AttributeError: module 'tensorflow._api.v1.compat.v2' has no attribute '__internal__'`

I have running a machine learning model (Matterport's Mask R-CNN) in google colab for a couple of weeks. All of a sudden today I am unable to run any of my notebooks due to I think some kind of...

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