If we want width and height separately we can use the other two functions below. Next comes the size of the image, so it would return the tuple consisting of the width and height of Image in ‘Pixels’. Next comes the mode, as it is a JPG image so its mode would probably be ‘RGB’ if it would be PNG/GIF or any other format, then it could be ‘RGBA/RGB/CYMK’. So, the answer to the first two lines has been already decoded.
#PIL IMAGE GETDATA CODE#
Source Code: # Importing Required LibraryĪfter reading the code you would have come to know two things that the image used is named as ‘test’ and it is in ‘JPEG/JPG’ format. Afterward, I’ll be explaining to you the code thoroughly. Now comes the actual code, I would suggest you read the code it is very sweet, short and simple code to understand.
#PIL IMAGE GETDATA INSTALL#
Image information in Python with Pillowįirst of all, we need to install the required libraries or modules: Installation: pip3 install pillow To learn more about Image Module or Pillow library you can refer to its documentation.
Image.format – This function is used to get the file format of the image like JPEG/JPG, PNG, GIF, etc.If the image is not opened using ‘open()’ function it returns the null string. Image.filename – This function is used to get the file name or the path of the image.So, we will be discussing only the required functions that we are going to use afterward in our code. There are many functions that are supported by the Image Module for Image Processing, it is not possible to discuss each and every function in detail here.
#PIL IMAGE GETDATA HOW TO#
While working in the Image Processing domain more often you need to work with image data, therefore it is essential to know how to retrieve the required information from an input image, and even though you not doing Image Processing it always good to know something about a field instead of nothing. In this library, there are many modules but we will be using only the ‘Image’ module because it contains all the functions that are required for retrieving the information from an image. You can read the original ITU-R Recommendation 709 6th edition.In this tutorial, we are going to learn how to get the basic information about an image using Python Imaging Library(PIL) i.e also known as ‘Pillow’. You can read the original ITU-R Recommendation 601 7th edition.
L = R * 299/1000 + G * 587/1000 + B * 114/1000īy iterating through each pixel you can convert 24-bit to 8-bit or 3 channel to 1 channel for each pixel by using the formula above. ITU-R 601 7th Edition Construction of Luminance formula:
One of the standards that can be used is Recommendation 601 from ITU-R (Radiocommunication Sector of International Telecommunication Union or ITU) organization which is also used by pillow library while converting color images to grayscale. So, how do we achieve one value from those three pixel values? We need some kind of averaging. L mode on the other hand only uses one value between 0-255 for each pixel (8-bit). In summary, color images usually use the RGB format which means every pixel is represented by a tuple of three value (red, green and blue) in Python. There are different image hashes that can be used to transform color images to grayscale.