Kid Galahad
Striker
Good stuff, well done GB
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My guitar has fallen over.
Mine and his in the same post go perfect together.rebski
@rebskiMine and his in the same post go perfect together.
My book cover very much resembles his photo.
The Two Ways an Image Can Be Rotated
Traditionally, computers have always rotated images by moving the actual pixels in the image. Digital cameras didn’t bother rotating images automatically. So, even if you used a camera and held it vertically to take a photo in portrait mode, that photo would be saved sideways, in landscape mode. You could then use an image editor program to rotate the image to appear in its correct portrait orientation. The image editor would move the pixels to rotate the image, modifying the actual image data.
This just worked, everywhere. The rotated image would appear the same in every program…as long as you took the time to manually rotate them all.
Manufacturers wanted to solve this annoyance, so they added rotation sensors to modern digital cameras and smartphones. The sensor detects which way you’re holding the camera, in an effort to rotate the photos properly. If you take an image in portrait mode, the camera knows and can act accordingly so you don’t have to rotate it yourself.
Unfortunately, there’s a small caveat. Digital camera hardware just couldn’t handle saving the image directly in rotated form. So rather than performing the computationally intensive task of rotating the entire image, the camera would add a small piece of data to the file, noting which orientation the image should be in. It adds this information to the Exif data that all photos have (which includes the model of camera you took it with, the orientation, and possibly even the GPS location where the photo was taken).
In theory, then, you could open that photo with an application, it would look at the Exif tags, and then present the photo in the correct rotation to you. The image data is saved in its original, unrotated form, but the Exif tag allows applications to correct it.
April 20th would be great! I'm going to a lecture about Aliens that day.Great stuff AB22, can't wait for the next one. Mid April would be great!
I honestly thought people were taking their photos in portrait.Regarding the rotation, all of the photos appeared correctly (in my preview) when I shared them.
It's possible that the EXIF tags were lost.
This kind of thing happens often in my life its because I'm right especially in my belief in Aliens.Mine and his in the same post go perfect together.
My book cover very much resembles his photo.
It was only 30 seconds of hard graft, but thanks mate, appreciate it.Well done marra.
It was only 30 seconds of hard graft, but thanks mate, appreciate it.
Regarding the rotation, all of the photos appeared correctly (in my preview) when I shared them.
Unfortunately, not every piece of software obeys this Exif tag. Some programs–especially older image programs–will just load the image and ignore the Exif Orientation tag, displaying the image in its original, unrotated state. Newer programs that obey Exif tags will show the image with its correct rotation, so an image may appear to have different rotations in different applications.
Rotating the image doesn’t exactly help, either. Change it in an old application that doesn’t understand the Orientation tag and the application will move the actual pixels around in the image, giving it a new rotation. It’ll look correct in older applications. Open that image in a new application that obeys the Orientation tag and the application will obey the Orientation tag and flip the already rotated image around, so it’ll look wrong in those new applications.
Even in a new application that understands the Orientation tags, it’s often not quite clear whether rotating an image will move the actual pixels in the image or simply modify the Exif tags. Some applications offer an option that will ignore the Exif Orientation tag, allowing you to rotate them without the tags getting in the way.
Whey it was her birthday.You bucked her twice off the belt??
Stud