I need to display the title of an image when it is opening in a new window using Image.show(). But the title displaying is some random text.
Discovered the solution of the problem using cv2. But I need a solution in PIL.
img = Image.open("picture.jpg")
Image._showxv(img, title='Result')
I expect the output to display the title of the image when it is showing. But getting some random text now.
Related
I'm facing an issue with Reportlab.
I have some troubles with images, for printing I need a full black image with no Cyan, Magenta or Yellow, I tried first with differents PNG, that's more simple to import but in all my tests there's still other colors.
So I need to import svg image but I have everytime an error, there is a simply way to do this ?
This is my code :
canvas = Canvas("*******\\test.pdf",pagesize=(dimX * mm,dimY* mm))
canvas.drawImage("app\static\img\Picto_CE.svg",25*mm,13*mm,width=22, height=5*mm,mask="auto")
canvas.save()
Everytime I tried this, I get the following error :
PIL.UnidentifiedImageError: fileName=<_io.BufferedReader
name='app\static\img\Picto_CE.svg'>
identity=[ImageReader#0x1decbca6f50] cannot identify image file
<_io.BytesIO object at 0x000001DECBDADFD0>
How can I solve this ? I already tried with renderPDF but it doesn't work.
drawing = svg2rlg("app\static\img\Picto_CE.svg")
renderPDF.draw(drawing, canvas, 25*mm, 13*mm)
Nothing appears in my PDF with that.
I have attached a very simple text image that I want text from. It is white with a black background. To the naked eye it seems absolutely legible but apparently to tesseract it is a rubbish. I have tried changing the oem and psm parameters but nothing seems to work. Please note that this works for other images but for this one.
Please try running it on your machine and see if it works. Or else I might have to change my ocr engine altogether.
Note: It was working earlier until I tried to add black pixels around the image to help the extraction process. Also I don't think that tesseract was trained on black text on a white background. It should be able to do this too. Also if this was true why does it work for other text images that have the same format as this one
Edit: Miraculously I tried running the script again and this time it was able to extract Chand properly but failed in the below mentioned case. Also please look at the parameters I have used. I have read the documentation and I feel this would be the right choice. I have added the image for your reference. It is not about just this image. Why is tesseract failing for such simple use cases?
To find the desired result, you need to know the followings:
Page-segmentation-modes
Suggested Image processing methods
The input images are boldly written, we need to shrink the bold font and then assume the output as a single uniform block of text.
To shrink the images we could use erosion
Result will be:
Erode
Result
CHAND
BAKLIWAL
Code:
# Load the library
import cv2
import pytesseract
# Initialize the list
img_lst = ["lKpdZ.png", "ZbDao.png"]
# For each image name in the list
for name in img_lst:
# Load the image
img = cv2.imread(name)
# Convert to gry-scale
gry = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
# Erode the image
erd = cv2.erode(gry, None, iterations=2)
# OCR with assuming the image as a single uniform block of text
txt = pytesseract.image_to_string(erd, config="--psm 6")
print(txt)
The following code does not display the image lists.jpg (in current dir):
print(dir(Image)) displays components; im.size, im.filename, im.format all return correct values.
What have I not done to display this jpg file?
from PIL import Image
im = Image.open("lists.jpg")
im.show() # did not work - perhaps due to the environment Jupyter Notebooks
Solution: replaced module with another with immediate results.
from IPython.display import Image
Image(filename='lists.jpg')
I know it is quite late to post but I will do it for new readers.
This problem arises in case of Jupyter Notebooks. Using show() does not display the image. So discard calling show() like in the code below. This will display the image in the output of the cell.
from PIL import Image
im = Image.open("lists.jpg")
im
To display the image on screen:
from PIL import Image
im = Image.open("lists.jpg")
im.show()
See also http://pillow.readthedocs.io/en/4.0.x/reference/Image.html
I wanted to implement some images in my Python-Tkinter application. I used the PhotoImage instance of Tkinter for this. It all worked perfectly whith the first picture: "RR.gif, a GIF image made with MS Paint. The second image: "Tank.gif", unfortunately caused some troubles. This picture was made (also in MS Paint) immediately after the first one and was also stored in GIF format. The images are located in the same folder so I assume the path is correct for both of them. However, the second label, (which contains the second image) gives the following error:
_tkinter.TclError: couldn't recognize data in image file "Tank.gif"
Which I think is strange since both images files are very similar. Does anyone know why I am getting this error? and how to solve it?
This is the simplest code in which the problem occurs.
from Tkinter import *
root = Tk()
icon = PhotoImage(file="RR.gif")
tank = PhotoImage(file="Tank.gif")
label_ico = Label(root, image=icon)
label_tan = Label(root, image=tank)
label_ico.pack()
label_tan.pack()
root.mainloop()
How can I create a python script that runs through the images (1.jpeg-n.jpeg) in a directory on a mac and displays them in a browser OR via another python program?
Do I import a file to python and than display in browser?
Do I extract the file names 1,2,3,4,5 and add that to a list, which I give to another function that calls a browser and displays?
Any help would be great.
Thanks!
Using Tkinter and PIL for this purpose is pretty trivial. Add muskies example to the information from this thread that contains this example:
# use a Tkinter label as a panel/frame with a background image
# note that Tkinter only reads gif and ppm images
# use the Python Image Library (PIL) for other image formats
# free from [url]http://www.pythonware.com/products/pil/index.htm[/url]
# give Tkinter a namespace to avoid conflicts with PIL
# (they both have a class named Image)
import Tkinter as tk
from PIL import Image, ImageTk
root = tk.Tk()
root.title('background image')
# pick an image file you have .bmp .jpg .gif. .png
# load the file and covert it to a Tkinter image object
imageFile = "Flowers.jpg"
image1 = ImageTk.PhotoImage(Image.open(imageFile))
# get the image size
w = image1.width()
h = image1.height()
# position coordinates of root 'upper left corner'
x = 0
y = 0
# make the root window the size of the image
root.geometry("%dx%d+%d+%d" % (w, h, x, y))
# root has no image argument, so use a label as a panel
panel1 = tk.Label(root, image=image1)
panel1.pack(side='top', fill='both', expand='yes')
# put a button on the image panel to test it
button2 = tk.Button(panel1, text='button2')
button2.pack(side='top')
# save the panel's image from 'garbage collection'
panel1.image = image1
# start the event loop
root.mainloop()
Of course if you're more familiar with another GUI, go ahead and adapt the example, it shouldn't take much.
You first have to find all image filenames. You can use os.listdir(...) to get all files in a certain directory, or glob.glob(...) to find all files matching a certain pattern.
Showing the images is the second and more challenging part of this. The first option is to open the images in an external program, this can be a web browser. On (most) platforms a command firefox 1.jpeg will open the image 1.jpeg in the Firefox browser. You can use the subprocess module to execute such commands. If you want to show them using a nice GUI, you have to create a GUI using some framework and use this. But if you are a beginner this might be a little bit too difficult for you.
For example:
import glob
import subprocess
files = glob.glob('dir/*.jpeg')
for file in files:
subprocess.call(['firefox', file])
muksie's answer already contains very useful advice. If don't want to write the HTML file yourself or want something a little fancier you could use a small script I wrote for the MDP library. This basically allows you to just do:
import slideshow
slideshow.show_image_slideshow(filenames, image_size=(80,60))
This will create an HTML slideshow and open it in your browser. You can grab just the needed files here (only templet.py and the two slideshow files are needed), which might be better for you than getting the full library.
It might be a lot easier to just generate a static web page with pictures than building a GUI for displaying pictures.
You can just generate a hmtl page, put the images on it and start your web browser with the newly created html file. this gives you some possibilities for layout as well.
If you just want a picture in the browser then muksie gave a working example.