scikit-learn 147 Questions sum ()) I actually get the same result for them, 4345064. Use this when reading an image file as a PIL.Image, convert it to ndarray, and save it using OpenCV imwrite (). cv2. Following is the proper syntax of Python imread () method: cv2.imread (filename, flag) Parameters: cv2.imread () method takes two parameters. Example: Save the HTML file. regex 183 Questions ! I can read images locally like that. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. pandas 2073 Questions json 200 Questions imread() method loads an image from the specified file. The other possible solution is converting to PIL through numpy, which has the capacity to write to BytesIO and Tempfile objects, but I want to avoid needless copies. So, first I must convert from byte [] to "ByteBuffer". Syntax of cv2 .imread Example 1: OpenCV cv2 Read Color Image . Example #1 How do you keep coffee cake fresh overnight? normalize (img, axis = 1) img1 . 100 Part6:Q12 Q20. How to use OpenCV and the cv2imread function? The following are 30 code examples of cv2.IMREAD_UNCHANGED () . Thanks. At last show the image using obj. In order to use these images, the first step will be reading an image. Run the codes given below to know the type of the image. beautifulsoup 189 Questions html file and insert it into the img code. An images web address, or image URL, is just the internet address that takes you to the image itself. OpenCV This is how to achieve that in OpenCV: import cv2 im = cv2.imread('test.jpg') im_resize = cv2.resize(im, (500, 500)) is_success, im_buf_arr = cv2.imencode(".jpg", im_resize) byte_im = im_buf_arr.tobytes() # or using BytesIO # io_buf = io.BytesIO (im_buf_arr) # byte_im = io_buf.getvalue () To do so you will use the default python method type(). If the source image is color image, grey value of each pixel is calculated and is read into the array. opencv. , bytesio , . If you continue to use this site we will assume that you are happy with it. list 486 Questions im_pillow = np.array(Image.open('data/src/lena.jpg')) im_bgr = cv2.cvtColor(im_pillow, cv2.COLOR_RGB2BGR) cv2.imwrite('data/dst/lena_bgr_cv_2.jpg', im_bgr) These are the main functions in OpenCV video I/O that we are going to discuss in this blog post: cv2.VideoCapture - Creates a video capture object, which would help stream or display the video. By voting up you can indicate which examples are most useful and appropriate. Load an image from a file: Mat img = imread (filename); If you read a jpg file, a 3 channel image is created by default. from io import BytesIO img = cv2. This question is answered By - shaked litbak. Is energy "equal" to the curvature of spacetime? python 11548 Questions For the first bit (connecting to S3), Boto3 is a good alternative (it's the Python SDK for AWS). -- pass np.asarray(frame) instead. Typically, the cv2.imread function will return None if the path to the input image is invalid, so be sure to double-check and triple-check your input image paths! import numpy as np import cv2 imgColor = cv2.imread (' data.png', 1) cv2 .imshow ( "Image", imgColor) Now, we are explicitly set the Window to cv2.moveWindow () with the same image name "Image" and 0, 0. See the following article for information on reading videos instead of still . Let's read the image using the cv2 imread () method. In the same to know the total columns(width), use len(img[0]). Syntax: cv2.imread (path, flag) Parameters: path: A string representing the path of the image to be read. The function imread loads an image from the specified file and returns it. urlretrieve() method. Image (content=content) I need to do similar, but my image comes from: content = cv2.imread Which returns numpy array, not bytes. Q12: . html 140 Questions BytesIO . The function will also fail for unsupported image file types, although OpenCV can read a wide variety of them, including JPEG, PNG, TIFF, and GIF. . How does legislative oversight work in Switzerland when there is technically no "opposition" in parliament? For the first bit (connecting to S3), Boto3 is a good alternative (its the Python SDK for AWS). Pass the full path of the haar cascade xml file. Would it be possible, given current technology, ten years, and an infinite amount of money, to construct a 7,000 foot (2200 meter) aircraft carrier? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, This could be really helpful. Use plt.imshow(gray, cmap='gray') for grayscale images. web-scraping 208 Questions, converting python code to python spark code, BotBuilder display message while waiting for blocking function. For the gray image, it is 1. python-2.7 114 Questions Write OpenCV image in memory to BytesIO or Tempfile. Disconnect vertical tab connector from PCB. Most of the functions are built for processing images and videos. Matplotlib increase plot size in steps : Get Solution Here, How to Crop an image in python using OpenCV : 5 Steps Only, How to Uninstall Pytorch ( conda, pip ,Pycharm ), importerror: cannot import name registermattype from cv2.cv2 (Fix It), cv2 waitkey in Python Example : Display an Image for Specific Time. This is generally used for loading the image efficiently from the internet. The flag cv2.IMREAD_COLOR is the default. OutputPrinting image after reading Image File using imread() method. How to convert a Numpy array image to a JPEG without saving the image? Why do we use perturbative series if they don't converge? Use requests. Please, could someone help me? OpenCV is used for deep learning algorithms. arrays 215 Questions But first, let us try to get an overview of the function through its definition. Site Hosted on CloudWays. Any help would be greatly appreciated! Should teachers encourage good students to help weaker ones? import cv2 Read an Image You can use the function cv2.imread () to read images. And the maximum values of each pixel can be from 0 to 256 (2**8). content)). image_stream = io .BytesIO () image_stream. 10711 . To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Currently, the following file formats are supported: Windows bitmaps - *.bmp, *.dib (always supported) If the image cannot be read (because of missing file, improper permissions, unsupported or invalid format), the function returns an empty matrix ( Mat::data ==NULL ). Henrique Try this: import numpy as np import cv2 as cv import io image_stream = io.BytesIO() image_stream.write(connection.read(image_len)) image_stream.seek(0) file_bytes = np.asarray(bytearray(image_stream.read()), dtype=np.uint8) img = cv.imdecode(file_bytes, cv.IMREAD_COLOR) Share: 18,939 Related videos on . Lastly, to know the number of channels use len(img[0][0]). resize (img,(IMG_SIZE, IMG_SIZE), interpolation = cv2. show() method. yes. Image. Or, we can change a single parameter, i.e, height, while keeping the other parameter, i.e, width, preserved. The shape tells the dimensions of the image file you read. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Read the input image using cv2.imread(). Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. after importing cv2, I still don't seem to be able to use any of the functions. The syntax of cv2.imread () function is given below. Refresh. My suggestion is : check if the image exists in the path you give. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. cv2.IMREAD_COLOR reads the image with RGB colors but no transparency channel. Call io.BytesIO(obj) with obj as the content of the response to load the raw data as a bytes object. How a free online bibliography publisher will simplify your life, How to Write an Evaluation Essay on the Affordable Care Act, Tips on how to choose the best online exploratory essay writing service, Advantages of Annotated Bibliography MLA Format. numpy 589 Questions cv2.imread () method loads an image from the specified file. Asking for help, clarification, or responding to other answers. Specify the full image path. Lets read the image using the cv2 imread() method. Convert the input image to grayscale. I tried: content = content.tobytes (). it only accepts numpy arrays. not sure where I am going wrong as I am following a tutorial exactly. It allows you to read any image. You can see all the pixel values of the image are of a NumPy array type. The function cv2 imshow () is used to add an image in the window. get(https://i.imgur.com/ExdKOOz.png), image_bytes = io. What is the difference between CV2 imread and imread_color? # import the necessary packages import numpy as np import urllib import cv2 # method #1: opencv, numpy, and urllib def url_to_image (url): # download the image, convert it to a numpy array, and then read # it into opencv format resp = urllib.urlopen (url) image = np.asarray (bytearray (resp.read ()), dtype="uint8") image = cv2.imdecode Python | cv2.imread () Method. cv2.imread () function of OpenCV that is commonly used to read the image from the file. Is there a way to convert numpy array to PNG/JPG payload without saving it as a file? If you run my code over our test image, do the results match for you on your machine as well? What is Imread in cv2? machine-learning 142 Questions imread (image_path) img = cv2. OpenCV is a cross-platform library that allows you to develop compute vision applications. string 206 Questions imread ("hopper.jpg"). Does OpenCV with Python require X Windows? import cv2 pic = cv2.imread ('img.png', cv2.IMREAD_UNCHANGED) print . OutputGetting the size of the image using the len() function. If you use img.size then it will multiply all the values (425*640*3) you get in the img.shape. Example #1 Although it is quite a straightforward function, but cv2 imread has many features that are not commonly known. The flag can be any one of the values from cv2.IMREAD_COLOR,cv2.IMREAD_COLOR and cv2.IMREAD_UNCHANGED. The imread function is a function of the OpenCV library. from io import BytesIO: import os: import cv2: from itsdangerous import base64_decode: import numpy as np: import tensorflow as tf: . The next time you open it, youll see the webpage with your newly added image. If filename is a multi-image file, then imread reads the first image in the file. The image is loaded as a numpy array which can be used for further image processing or transformation operations. cv2.IMREAD_UNCHANGED reads the image as is from the source. This is the default value for the flag when no value is provided as the second argument for cv2 imread(). OpenCV has many functions that do all these tasks efficiently. dataframe 917 Questions open(BytesIO(response. Example 3: OpenCV cv2 - Read Image with Transparency Channel. The above shape tells you the dimension of the image. Thanks for contributing an answer to Stack Overflow! imread() Loads an image from a file. Here is the code: Server Side: import io import socket . Why does the distance from light to subject affect exposure (inverse square law) while from subject to lens does not? CGAC2022 Day 10: Help Santa sort presents! You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. cv2.IMREAD_GRAYSCALE reads the image as grey image. check if the count variable has a valid number. read (image_len)) image_stream.seek ( 0 ) img = cv2.imread (image_stream, 0 ) cv2.imshow ( 'image' ,img) imreadBytesIO (). dictionary 301 Questions One is the path of the image and the other is the flag, which is optional. A = imread( filename ) reads the image from the file specified by filename , inferring the format of the file from its contents. cv2.imread(/path/to/image, flag) where /path/to/image has to be the complete absolute path to the image. In Python and OpenCV, you can read (load) and write (save) image files with cv2.imread () and cv2.imwrite (). This is performed by using this function. Was the ZX Spectrum used for number crunching? To read the image using imread() method, you have to pass two parameters. So you have a problem with the previous line cv2.imread. function 126 Questions My image is colorful, thats why the channel will be 3. Full sample code: 23 1 from io import BytesIO 2 3 import boto3 4 import cv2 5 import numpy as np 6 7 keras 161 Questions BytesIO(response. How to crop an image in OpenCV using Python, Writing more than 4 channel images in OpenCV Python. selenium 248 Questions but be prepared to see strange colors because PIL uses RGB order while OpenCV expects BGR order, and interprets the data accordingly.. "/> response = requests. I need to write an OpenCV image that sits in memory to a BytesIO or Tempfile object for use elsewhere. The flag is optional and one of the following possible values can be passed for the flag. The rubber protection cover does not pass through the hole in the rim. It was only necessary to add a cv2.waitkey(1) after cv2.imshow. discord.py 121 Questions tkinter 230 Questions If the image cannot be read (because of missing file, improper permissions, unsupported or invalid format) then this method returns an empty matrix. The cv2.imread function accepts a single parameter, the path to where your image lives on your disk: image = cv2.imread ("path/to/image.png") The OpenCV cv2.imread function then returns either of two values: A NumPy array representing the image with the shape (num_rows, num_cols, num_channels), which we'll discuss later in this tutorial Read Image using cv2.imread () OpenCV Python Idiot Developer | by Nikhil Tomar | Analytics Vidhya | Medium Write Sign up Sign In 500 Apologies, but something went wrong on our end. cv2.imread (path, ) path: cv2.IMREAD_COLORcv2.IMREAD_GRAYSCALEcv2.IMREAD_UNCHANGEDalpha cv2.IMREAD_COLOR (heightwidthchannel)channelBGR PIL ImageOpenCV img = Image.open () img = cv2.cvtColor (np.asarray (img), cv2.COLOR_RGB2BGR) OpenCVPIL Image Initiate a Haar cascade classifier object cat_cascade = cv2.CascadeClassifier() for cat face detection. imread and Color Channels. cv2.IMREAD_COLOR reads the image with RGB colors but no transparency channel. We and our partners use cookies to Store and/or access information on a device.We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development.An example of data being processed may be a unique identifier stored in a cookie. If you save the image using cv2.imwrite you can see the image has been converted to grayscale. BytesIO(response . Something can be done or not a fit? . If the source image is an RGB, it loads the image into array with Red, Green and Blue channels. By voting up you can indicate which examples are most useful and appropriate. get() and PIL. A Confirmation Email has been sent to your Email Address. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. request. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Answer You need to first establish a connection to S3, then download the image data, and finally decode the data with OpenCV. It importerror: cannot import name registermattype from cv2.cv2 error cv2 waitkey() allows you to wait for a Opencv is a library that is very helpful 2021 Data Science Learner. How to make voltage plus/minus signs bolder? The two parameters are as follows: filename is the first and the compulsory parameter to be passed and it takes a string value representing the path of the image file (or the image name with extension). The following are 30 code examples of cv2.imdecode () . Why does my stock Samsung Galaxy phone/tablet lack some features compared to other Samsung Galaxy models? Lets know the picture that I am using in the upcoming examples. INTER_AREA) img = tf. We can use imread () method of cv2 library for reading an image ,so first we have to import cv2 library in the python file using import statement. cv2.imshow will not accept PIL Images. cv2. The cv2 is a cross-platform library designed to solve all computer vision-related problems. opencv 157 Questions Can we keep alcoholic beverages indefinitely? You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. OpenCV-Python is a library of Python bindings designed to solve computer vision problems. python opencv imread Share These are the examples that will clear your understanding of how to read image file in python using the cv2 imread() method. Is it correct to say "The glue on the back of the sticker is dying down so I can not stick the sticker to the wall"? In the above code, we first convert binary image to Numpy array, then decode the array with cv2.imdecode().The final img is an OpenCV image in Numpy ndarray format.. PIL or OpenCV image to base64 PIL Image to base64 ; cv2.VideoWriter - Saves the output video to a directory. If the image cannot be read (because of missing file, improper permissions, unsupported or invalid format), the function returns an empty matrix ( Mat::data==NULL ). Here are the examples of the python api cv2.imdecode taken from open source projects. I am having trouble reading images from the S3 bucket. To learn more, see our tips on writing great answers. . Perhaps you do need to upload your image? Then you can drag an image into the box or you can select the image from your desktop or another source. open() to download and read image data, how to convert image file to url image in python Code Answer. Manage Settings Allow Necessary Cookies & ContinueContinue with Recommended Cookies. keras. uint8) print . Is it illegal to use resources in a University lab to prove a concept could work (to ultimately use to create a startup). OPENCV 3.3Python 2.7. It can do many things like image processing, video capturing e.t.c. One is the path of the image and the other is the flag, which is optional. The flag can be any one of the values from cv2.IMREAD_COLOR,cv2.IMREAD_COLOR and cv2.IMREAD_UNCHANGED. This article describes the following contents. The answer delivered by arrybn, worked for me. django-models 115 Questions The second argument of the cv2.imread () function is a flag to specify an image color format. Python cv2.imdecode () function is used to read image data from a memory cache and convert it into image format. OPENCV. If the source image is ARGB, it loads the image with three color components along with the alpha or transparency channel. Concentration bounds for martingales with adaptive Gaussian steps. Subscribe to our mailing list and get interesting stuff and updates to your email inbox. Here are the examples of the python api cv2.IMREAD_IGNORE_ORIENTATION taken from open source projects. You may also want to check out all available functions/classes of the module cv2 , or try the search function . Marko5280 (Mar 7 '18) edit When I try to execute mat = new Mat(HEIGHT, WIDTH, CvType.CV_8UC3, Still ); I get the message. In OpenCV, you have to the img. You can also know the dimensions of the image file using len() method. matplotlib 384 Questions write (connection. Using it you can make projects like face detection, object detection e.t.c. for x in m: # Convert the image to a numpy array image = numpy.asarray(bytearray(x[0]), dtype="uint8") # Decode the image to a cv2 image s = cv2.imdecode(image, cv2.IMREAD_COLOR) # Convert the image from cv2's BGR to RGB that matplotlib expects s = cv2.cvtColor(s, cv2.COLOR_BGR2RGB) # s = mpimg.imread(io.BytesIO(x[0])) plt.imshow(s) plt.show() from io import BufferedReader img = request.file.get ( 'xxx') # Assume that postman passed the picture to the server, the server is received after IMG # War into bufferedreader format img . pyspark 113 Questions OpenCV bytesio . imread() method loads an image from the specified file. datetime 140 Questions When would I give a checkpoint to my D&D party that they can return to if they die? Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content, Python - Keras API server to process image on trained custom model, Save images obtained from OpenCV on another computer (using FTP or other way), Python: SpooledTemporaryFile suffix not working. tensorflow 259 Questions We will look at its application and work later in this article. content), img = Image. Images are read as NumPy array ndarray. #2. Heres how its done in three easy steps: just open the python interpreter and type webbrowser. import numpy as np import cv2 as cv import io image_stream = io.BytesIO () image_stream.write (connection.read (image_len)) image_stream.seek (0) file_bytes = np.asarray (bytearray (image_stream.read ()), dtype=np.uint8) img = cv.imdecode (file_bytes, cv.IMREAD_COLOR) 13 2017/11/20 arrybn The syntax of cv2.imwrite () function is cv2.imwrite ('/path/to/destination/image.png',image) where First Argument is Path to the destination on file system, where image is ought to be saved. imread and File Extensions. shape to find the dimensions. 3 Examples of cv2.resize () in Python OpenCV 3.1 Read Sample Image and Display 3.2 Example - 1: Resize the Image to Half By Calculating Pixel Size 3.3 Example - 2: Scaling Down the Image to Factor 0.5 (Half) 3.4 Example - 3: Resize the Image to Double By Calculating Pixel Size 3.5 Example - 4: Scale Up the Image to Factor 2 (Double) Introduction Second Argument is ndarray containing image Returns True is returned if the image is written to file system, else False. OpenCV-Python is a library of Python bindings designed to solve computer vision problems. Introduction. flask 176 Questions utils. 1 Answer Sorted by: 43 cv2.imencode may help you: import numpy as np import cv2 import io img = np.ones ( (100, 100), np.uint8) # encode is_success, buffer = cv2.imencode (".jpg", img) io_buf = io.BytesIO (buffer) # decode decode_img = cv2.imdecode (np.frombuffer (io_buf.getbuffer (), np.uint8), -1) print (np.allclose (img, decode_img)) # True How to create a web page link or URL for an image. We can do it with the help of OpenCV or PIL. The window itself adjusts to the size of . Python cv2.CVTimgcv2.COLOR\u BGR2GRAY. open(http://www.google.com) and see if it does what you want. Reading the image file is a must for further processing of the image. We can resize images with specific width and height values, irrespective of their original dimensions. ("OpenCV", cv2. how to convert rgb image To. python opencv. 1 cv2 import cv2 import numpy as np from matplotlib import pyplot as plt from PIL import Image img_url = r'C:\Users\xxc\Desktop\capture.png' with open (img_url, 'rb') as f: a = f.read () # np.ndarray [np.uint8: 8] img = cv2.imdecode (np.frombuffer (a, np.uint8), cv2.IMREAD_COLOR) # # bgrrbg cvtColor (img, cv2. . The flag cv2.IMREAD_COLOR is the default. loops 120 Questions . cv2.imread() HSVHSV . And it is the below.Sample Image for using imread() method. Are defenders behind an arrow slit attackable? import numpy as np import cv2 Now, read a new image using cv2.imread () method. I will use free images available on the Internet. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page. Q12 Q20 . Python OpenCVOpenCV[]import cv2cv_im = cv2.imread('.jpg')opencv imreadim = cv2.imdecode(np . I am concerned this is a dead end question, because cv2.imwrite() takes a filename as an argument, and then uses the file extension to infer the image type to write (.jpg, .png, .tiff, etc.). Next, open your index. Connect and share knowledge within a single location that is structured and easy to search. Are Facial Fillers Safe and Effective for Wrinkle Reduction? By voting up you can indicate which examples are most useful and appropriate. Now you have read the image using the cv2.imread(), lets know the type of the image. You can also read image files as ndarray with Pillow instead of OpenCV. The consent submitted will only be used for data processing originating from this website. image_stream = io.BytesIO() image_stream.write(connection.read(image_len)) image_stream.seek(0) img = cv2.imread(image_stream,0) cv2.imshow('image',img) imreadBytesIO() OPENCV 3.3Python 2.7 COLOR_BGR2GRAY) img = cv2. ,python,opencv,Python,Opencv, from PIL import Image import cv2 import numpy as np import io buf = io.BytesIO (ret.content) image = Image.open (buf) # result is (25,150,3) print (np.asarray (image).shape . Save plot to image file instead of displaying it using Matplotlib, Image Processing: Algorithm Improvement for 'Coca-Cola Can' Recognition. You need to first establish a connection to S3, then download the image data, and finally decode the data with OpenCV. All reactions for-loop 120 Questions For instance, bgr color or grayscale. I tried following the pycharm prompt to "create function imread () in module init _.py" but haven't had any luck. For example, to know the total rows (height) you will use the len(img). BufferedReader converts the filestorage-type data passed by Postman into a BufferedReader type, and then converts to Numpy Array and performs CV2 operation. If the image cannot be read (because of missing file, improper permissions, unsupported or invalid format) then this method returns an empty matrix. ; In addition, we also discuss other needed functions such as cv2.imshow(), cv2.waitKey() and the get() method which is used to read the . The cv2 imread() function is one of them. cv2BGR cv2.cvtimgcv2.COLOR\u BGR2RGB cv2 BGR matplotlib RGB cv2.cvtColor auxImgRGB = cv2.cvtColor(auxImg, cv2.COLOR_BGR2RGB) Here 425 is the number of columns, 640 is the number of rows and 3 is the number of channels. cv2.imwrite() does this at the C++ level, so I am concerned that there is no way to successfully pass a non-filename object to it. django 680 Questions Better way to check if an element only exists in one array, Irreducible representations of a product of two groups. The parameter code when converting from RGB to BGR is cv2.COLOR_RGB2BGR. Q20: . You may also want to check out all available functions/classes of the module cv2 , or try the search function . To read the image using imread () method, you have to pass two parameters. Syntax: cv2.imdecode (buf,flags) Parameters: buf - It is the image data received in bytes flags - It specifies the way in which image should be read. The image should be in the working directory or a full path of image should be given. The function imread loads an image from the specified file and returns it. I'm getting an error. python PIL/cv2/base64 PILcv2pythonPIL. OutputThe shape of the image in OpenCV python. python-3.x 1153 Questions . Load BytesIO image with opencv . To load the image data, call PIL.Image.open(bytes_obj) with bytes_obj as the bytes object: Run the following lines of code and see the output. The result is same. Example 1 - OpenCV cv2.imwrite () How do I read image data from a URL in Python? init. We use cookies to ensure that we give you the best experience on our website. import cv2 # Create new solid red image and save to disk as PNG im = Image.new ('RGB', (640, 480), (255, 0, 0)) im.save ('image.png') # Slurp entire contents, raw and uninterpreted, from disk to memory with open ('image.png', 'rb') as f: raw = f.read () # "raw" should now be very similar to what you get from your S3 bucket Now, all I need is this: Even you are finding difficulties in it then you can contact us for more help. NLTK edit_distance : How to Implement in Python ? Not the answer you're looking for? csv 169 Questions In this entire tutorial, you will know its implementation. In the same way, you can also know the data type of the image using the img.dtype. cv2.IMREAD_COLOR : It loads a color image. Write URL with file name in urllib. rev2022.12.11.43106. In this tutorial, we will see how to read an image in python programming language using open-cv which exists as cv2 (computer vision) library in python. Pytorch is an open-source machine learning library. It will read the image for further processing which will help in classification and analysis purposes. BytesIO (data), ), np. img = cv2. Find centralized, trusted content and collaborate around the technologies you use most. image_stream = io.BytesIO () image_stream.write (connection.read (image_len)) image_stream.seek (0) img = cv2.imread (image_stream,0) cv2.imshow ('image',img) But it seems that imread doesn't deal with BytesIO (). Importerror No Module Named cv2 : How to Fix . #1. I'm using OPENCV 3.3 and Python 2.7. Ready to optimize your JavaScript with Rust? If the image cannot be read (because of missing file, improper permissions, unsupported or invalid format) then this method returns an empty matrix. We respect your privacy and take protecting it seriously. Let's look at the code to understand how it's done. Copy the URL of the image you wish to insert. In this tutorial, you will learn how to use OpenCV and the cv2.imread cv2.imread function to: 1 Load an input image from disk 2 Determine the images width, height, and number of channels 3 Display the loaded image to our screen 4 Write the image back out to disk as a different image filetype. Go to the Imgur website, then on the top left click the New post button. shape # (438, 763, 3) . Thank you for signup. 1 cv2 import cv2 import numpy as np from matplotlib import pyplot as plt from PIL import Image img_url = r'C:\Users\xxc\Desktop\capture.png' with open (img_url, 'rb') as f: a = f.read () # np.ndarray [np.uint8: 8] img = cv2.imdecode (np.frombuffer (a, np.uint8), cv2.IMREAD_COLOR) # # bgrrbg Example 2: OpenCV cv2 - Read Image as Grey Scale. imread ("../Documents/3.jpg") img. I'll check it out tomorrow. 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