2671: Rotation - Revision history

2A0A:EF40:C2:3201:77A3:C707:E7E4:409B at 08:10, 13 August 2025

2025-08-13T08:10:54Z

2A0A:EF40:C2:3201:77A3:C707:E7E4:409B at 08:10, 13 August 2025

2025-08-13T08:10:36Z

172.70.58.6: /* Explanation */

2025-05-20T20:19:28Z

‎Explanation

Cheesesentience: /* Explanation */

2025-05-20T16:59:11Z

‎Explanation

Asdf: 2x image version

2024-05-03T09:47:26Z

2x image version

162.158.33.130: /* Explanation */ tv tropes link fixed

2024-03-05T09:10:31Z

‎Explanation: tv tropes link fixed

162.158.33.130: /* Explanation */

2024-03-05T09:10:11Z

‎Explanation

1234231587678 at 19:36, 11 February 2024

2024-02-11T19:36:44Z

Kynde: /* Explanation */

2024-01-18T12:17:47Z

‎Explanation

Firestar233: Why was '.' being used instead of '*' for multiplication?

2023-06-19T01:05:08Z

Why was '.' being used instead of '*' for multiplication?

← Older revision		Revision as of 08:10, 13 August 2025
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	==Explanation==		==Explanation==
−	{{incomplete\|It seems someone intended to put an image in this explanation. Could someone either figure out what was intended or confirm that it is unnecessary? ''<- explain what this is refering to, as there's several possibilities, and not if it's even any of these that is considered to need checking/removing...''}}
	This is another one of [[Randall\|Randall's]] [[:Category:Tips\|Tips]], this time a phone tip. This tip claims that rotating a phone and taking a screenshot too many times will cause an image to disappear into nothingness and warns the user against doing so. The camera and the display both have limited resolutions, so the detail of the original screenshot at the center of the image will be reduced as it approaches the range of a few pixels, hence the original image will be lost before it reaches the sub-pixel range. This is funny because the default resolution of contemporary camera phones can be too large to meet size requirements for e.g. mobile phone {{w\|Multimedia Messaging Service}}, web file uploads, or email attachments, so one or two steps of this awkward procedure are sometimes necessary. Other comics such as [[878: Model Rail]] also use recursion as limits.		This is another one of [[Randall\|Randall's]] [[:Category:Tips\|Tips]], this time a phone tip. This tip claims that rotating a phone and taking a screenshot too many times will cause an image to disappear into nothingness and warns the user against doing so. The camera and the display both have limited resolutions, so the detail of the original screenshot at the center of the image will be reduced as it approaches the range of a few pixels, hence the original image will be lost before it reaches the sub-pixel range. This is funny because the default resolution of contemporary camera phones can be too large to meet size requirements for e.g. mobile phone {{w\|Multimedia Messaging Service}}, web file uploads, or email attachments, so one or two steps of this awkward procedure are sometimes necessary. Other comics such as [[878: Model Rail]] also use recursion as limits.

@@ Line 13: / Line 13: @@
 This is another one of [[Randall|Randall's]] [[:Category:Tips|Tips]], this time a phone tip. This tip claims that rotating a phone and taking a screenshot too many times will cause an image to disappear into nothingness and warns the user against doing so. The camera and the display both have limited resolutions, so the detail of the original screenshot at the center of the image will be reduced as it approaches the range of a few pixels, hence the original image will be lost before it reaches the sub-pixel range. This is funny because the default resolution of contemporary camera phones can be too large to meet size requirements for e.g. mobile phone {{w|Multimedia Messaging Service}}, web file uploads, or email attachments, so one or two steps of this awkward procedure are sometimes necessary. Other comics such as [[878: Model Rail]] also use recursion as limits.
-[[Image:World lines and world sheet.svg|thumb|200px|{{w|String theory}} describes the {{w|worldline}}s of point-like particles as {{w|worldsheet}}s of "closed strings," forming a topological  foam.]]
+For a fuller explanation of the concepts involved, including {{w|Planck units}}, often associated with the topological {{w|quantum foam}} of {{w|string theory}}, see [https://www.youtube.com/watch?v=pUF5esTscZI this CGP Grey video.] For an explanation of topological string theory, see [[2658: Coffee Cup Holes]]. See also [[1683: Digital Data]] for an analogous image processing concept.
 The title text refers to producing photographically likely higher resolution images from lower resolutions, an active area of current research.[https://openaccess.thecvf.com/content/ICCV2021/papers/Liang_Hierarchical_Conditional_Flow_A_Unified_Framework_for_Image_Super-Resolution_and_ICCV_2021_paper.pdf] Because reducing the resolution of an image is a lossy process, results obtained through such processes will not be able to perfectly recreate the original. Machine learning can be used to calculate how images of known photographic subjects (or e.g. anime-style art, in the case of {{w|waifu2x}}) behave under certain types of noise or reduction in size, so that images ''of those kinds'' can be upscaled in a way that, if not perfectly recreating the original, at least is a faithful representation, but when the image is scaled all the way down to one pixel, everything except a small amount of data about the image's overall color is lost, making reconstructing the original image impossible. Randall disclaims that, because the AI upscaling is based on ingesting a large corpus of human-made art (with subjects that we find 'interesting' or at least meaningful being predominantly represented), the AI will produce an image that is at least as cool as the original image was, and in fact some image generation AIs actually work on a similar principle — for example, "reverse diffusion" AIs are trained by teaching them to reconstruct images from noise, at which they can produce entirely new images by being fed ''actual'' noise.  He could also be making a pun on {{w|color temperature}}, which the upscaler will be able to match to the original image. The "{{tvtropes|EnhanceButton|enhance button}}" for upscaling images is a common trope in movies and television, especially in crime and science fiction stories.

@@ Line 10: / Line 10: @@
 ==Explanation==
-{{incomplete|It seems someone intended to put an image in this explanation. Could someone either figure out what was intended or confirm that it is unnecessary?}}
+{{incomplete|It seems someone intended to put an image in this explanation. Could someone either figure out what was intended or confirm that it is unnecessary? ''<- explain what this is refering to, as there's several possibilities, and not if it's even any of these that is considered to need checking/removing...''}}
 This is another one of [[Randall|Randall's]] [[:Category:Tips|Tips]], this time a phone tip. This tip claims that rotating a phone and taking a screenshot too many times will cause an image to disappear into nothingness and warns the user against doing so. The camera and the display both have limited resolutions, so the detail of the original screenshot at the center of the image will be reduced as it approaches the range of a few pixels, hence the original image will be lost before it reaches the sub-pixel range. This is funny because the default resolution of contemporary camera phones can be too large to meet size requirements for e.g. mobile phone {{w|Multimedia Messaging Service}}, web file uploads, or email attachments, so one or two steps of this awkward procedure are sometimes necessary. Other comics such as [[878: Model Rail]] also use recursion as limits.

← Older revision		Revision as of 16:59, 20 May 2025
Line 10:		Line 10:

	==Explanation==		==Explanation==
		+	{{incomplete\|It seems someone intended to put an image in this explanation. Could someone either figure out what was intended or confirm that it is unnecessary?}}
	This is another one of [[Randall\|Randall's]] [[:Category:Tips\|Tips]], this time a phone tip. This tip claims that rotating a phone and taking a screenshot too many times will cause an image to disappear into nothingness and warns the user against doing so. The camera and the display both have limited resolutions, so the detail of the original screenshot at the center of the image will be reduced as it approaches the range of a few pixels, hence the original image will be lost before it reaches the sub-pixel range. This is funny because the default resolution of contemporary camera phones can be too large to meet size requirements for e.g. mobile phone {{w\|Multimedia Messaging Service}}, web file uploads, or email attachments, so one or two steps of this awkward procedure are sometimes necessary. Other comics such as [[878: Model Rail]] also use recursion as limits.		This is another one of [[Randall\|Randall's]] [[:Category:Tips\|Tips]], this time a phone tip. This tip claims that rotating a phone and taking a screenshot too many times will cause an image to disappear into nothingness and warns the user against doing so. The camera and the display both have limited resolutions, so the detail of the original screenshot at the center of the image will be reduced as it approaches the range of a few pixels, hence the original image will be lost before it reaches the sub-pixel range. This is funny because the default resolution of contemporary camera phones can be too large to meet size requirements for e.g. mobile phone {{w\|Multimedia Messaging Service}}, web file uploads, or email attachments, so one or two steps of this awkward procedure are sometimes necessary. Other comics such as [[878: Model Rail]] also use recursion as limits.

@@ Line 3: / Line 3: @@
 | date      = September 12, 2022
 | title     = Rotation
-| image     = rotation.png
+| image     = rotation 2x.png
 | titletext = It's okay, we can just feed the one-pixel image into an AI upscaler and recover the original image, or at least one that's just as cool.
 }}

@@ Line 14: / Line 14: @@
 For a fuller explanation of the concepts involved, including {{w|Planck units}}, often associated with the topological {{w|quantum foam}} of {{w|string theory}}, please see [https://www.youtube.com/watch?v=pUF5esTscZI this CGP Grey video.] For an explanation of topological string theory, see [[2658: Coffee Cup Holes]]. Please see also [[1683: Digital Data]] for an analogous image processing concept.
-The title text refers to producing photographically likely higher resolution images from lower resolutions, an active area of current research.[https://openaccess.thecvf.com/content/ICCV2021/papers/Liang_Hierarchical_Conditional_Flow_A_Unified_Framework_for_Image_Super-Resolution_and_ICCV_2021_paper.pdf] Because reducing the resolution of an image is a lossy process, results obtained through such processes will not be able to perfectly recreate the original. Machine learning can be used to calculate how images of known photographic subjects (or e.g. anime-style art, in the case of {{w|waifu2x}}) behave under certain types of noise or reduction in size, so that images ''of those kinds'' can be upscaled in a way that, if not perfectly recreating the original, at least is a faithful representation, but when the image is scaled all the way down to one pixel, everything except a small amount of data about the image's overall color is lost, making reconstructing the original image impossible. Randall disclaims that, because the AI upscaling is based on ingesting a large corpus of human-made art (with subjects that we find 'interesting' or at least meaningful being predominantly represented), the AI will produce an image that is at least as cool as the original image was, and in fact some image generation AIs actually work on a similar principle — for example, "reverse diffusion" AIs are trained by teaching them to reconstruct images from noise, at which they can produce entirely new images by being fed ''actual'' noise.  He could also be making a pun on {{w|color temperature}}, which the upscaler will be able to match to the original image. The "{{tvtropes|EnhanceButton|enhance button]" for upscaling images is a common trope in movies and television, especially in crime and science fiction stories.
+The title text refers to producing photographically likely higher resolution images from lower resolutions, an active area of current research.[https://openaccess.thecvf.com/content/ICCV2021/papers/Liang_Hierarchical_Conditional_Flow_A_Unified_Framework_for_Image_Super-Resolution_and_ICCV_2021_paper.pdf] Because reducing the resolution of an image is a lossy process, results obtained through such processes will not be able to perfectly recreate the original. Machine learning can be used to calculate how images of known photographic subjects (or e.g. anime-style art, in the case of {{w|waifu2x}}) behave under certain types of noise or reduction in size, so that images ''of those kinds'' can be upscaled in a way that, if not perfectly recreating the original, at least is a faithful representation, but when the image is scaled all the way down to one pixel, everything except a small amount of data about the image's overall color is lost, making reconstructing the original image impossible. Randall disclaims that, because the AI upscaling is based on ingesting a large corpus of human-made art (with subjects that we find 'interesting' or at least meaningful being predominantly represented), the AI will produce an image that is at least as cool as the original image was, and in fact some image generation AIs actually work on a similar principle — for example, "reverse diffusion" AIs are trained by teaching them to reconstruct images from noise, at which they can produce entirely new images by being fed ''actual'' noise.  He could also be making a pun on {{w|color temperature}}, which the upscaler will be able to match to the original image. The "{{tvtropes|EnhanceButton|enhance button}}" for upscaling images is a common trope in movies and television, especially in crime and science fiction stories.
 === Mathematical corner ===

@@ Line 18: / Line 18: @@
 === Mathematical corner ===
-The scale reduction caused by a rotation can be approximated. If ''a'' is the width of the picture and ''b'' its height, the reduction is ''x=a/b'', the aspect ratio of the picture rectangle. As can be seen in the comic, the first rotation leaves two gray areas on each side of the picture that are roughly square. The width of the reduced picture is ''x.a'' = ''a''2/''b''. Each gray area is ''a'' (high) by (''b-x.a'')/2 (wide). This is roughly square, but will not be exactly square unless
+The scale reduction caused by a rotation can be approximated. If ''a'' is the width of the picture and ''b'' its height, the reduction is ''x=a/b'', the aspect ratio of the picture rectangle. As can be seen in the comic, the first rotation leaves two gray areas on each side of the picture that are roughly square. The width of the reduced picture is ''x*a'' = ''a''²/''b''. Each gray area is ''a'' (high) by (''b-x*a'')/2 (wide). This is roughly square, but will not be exactly square unless
-: ''b'' = 2''a'' + ''x.a'' and since ''x=a/b'', dividing by ''b'' we obtain 1 = 2''x'' + x².
+: ''b'' = 2''a'' + ''x*a'' and since ''x=a/b'', dividing by ''b'' we obtain 1 = 2''x'' + x².
 This is a quadratic equation, whose only positive solution is √2-1 ≈ 0.414