Displaying image by creating image file at runtime

[Javeria]

I m using a single imageView to display images from a ListView that contains the file paths of the images from which the user can select, the selected image from ListView is processed using opencv and then displayed in the imageView, but the ImageView wasn't updating when the user selects from the ListView, so i tried to create a new image file after the image is selected and processed, which works now but i have to create a new image file everytime the image needs to be updated, so is there any other way to display the updated image with creating a new image file at runtime?