• Re: What are resized jpeg's?

    From Zaidy036@3:633/280.2 to All on Sun Jun 1 10:29:53 2025
    On 5/31/2025 8:04 PM, micky wrote:
    What are resized jpeg's?

    how do they get resized? I've never done this on purpose. They're on
    the PC but come from a phone.

    More importantly, if I delete them, is there an original somewhere else? Using Everything to try to find a jpeg without the resized prefix
    doesn't find anything. But I'm sure I have not deleted any other copy.

    I have 36 of them, and they are in my Appdata, in the directory for MyPhoneExplorer, which I use to copy pictures from my phone to my PC,
    and they are in a subdirectory named after my old phone

    They have names like
    000010000006_Resized_20200209_170147.jpeg

    in C:\Users\mmm\AppData\Roaming\MyPhoneExplorer\samsung SM-A305F [354863100416828]\MessageAttachments\000010000006_Resized_20200209_170147.jpeg

    One has been resized twice!!!! 000010000012_Resized_Resized_20200310_163246.jpeg
    What does that mean?

    They seem full-height without losing clarity, so what was the original
    size? But narrow, since they're from a phone,

    **(my persona, mmm, is for micky, micky, micky.)

    The free FastStone Image Viewer can be used to adjust photos how ever
    you want and then save them to where ever you want.

    First look on the phone and see if they are still there.

    Use FastStone either on the originals or the copies to adjust them.



    --- MBSE BBS v1.1.1 (Linux-x86_64)
    * Origin: A noiseless patient Spider (3:633/280.2@fidonet)
  • From Steve Hayes@3:633/280.2 to All on Sun Jun 1 12:43:14 2025
    On Sat, 31 May 2025 20:29:53 -0400, Zaidy036 <Zaidy036@air.isp.spam>
    wrote:

    On 5/31/2025 8:04 PM, micky wrote:
    What are resized jpeg's?

    how do they get resized? I've never done this on purpose. They're on
    the PC but come from a phone.

    More importantly, if I delete them, is there an original somewhere else?
    Using Everything to try to find a jpeg without the resized prefix
    doesn't find anything. But I'm sure I have not deleted any other copy.

    I have 36 of them, and they are in my Appdata, in the directory for
    MyPhoneExplorer, which I use to copy pictures from my phone to my PC,
    and they are in a subdirectory named after my old phone

    They have names like
    000010000006_Resized_20200209_170147.jpeg

    in C:\Users\mmm\AppData\Roaming\MyPhoneExplorer\samsung SM-A305F
    [354863100416828]\MessageAttachments\000010000006_Resized_20200209_170147.jpeg

    One has been resized twice!!!!
    000010000012_Resized_Resized_20200310_163246.jpeg
    What does that mean?

    They seem full-height without losing clarity, so what was the original
    size? But narrow, since they're from a phone,

    **(my persona, mmm, is for micky, micky, micky.)

    The free FastStone Image Viewer can be used to adjust photos how ever
    you want and then save them to where ever you want.

    First look on the phone and see if they are still there.

    Use FastStone either on the originals or the copies to adjust them.

    Irfanview photo app lets you resize JPEG files to any size you like
    but allso lets you name the resized file. I often resize photos before
    posting them on the web,



    --
    Steve Hayes from Tshwane, South Africa
    Web: http://www.khanya.org.za/stevesig.htm
    Blog: http://khanya.wordpress.com
    E-mail - see web page, or parse: shayes at dunelm full stop org full stop uk

    --- MBSE BBS v1.1.1 (Linux-x86_64)
    * Origin: Khanya Publications (3:633/280.2@fidonet)
  • From R.Wieser@3:633/280.2 to All on Sun Jun 1 16:27:59 2025
    micky,

    What are resized jpeg's?

    /Most likely/ they are images that have been resized. :-)

    how do they get resized? I've never done this on purpose.
    They're on the PC but come from a phone.

    Its possible that the program which allows you to transfer images from your phone to your PC does that for you automatically. Why ? Because your
    phone has quite different resolution than your PC, and it makes little sense to keep that resolution on your PC.

    More importantly, if I delete them, is there an original
    somewhere else?

    If there is it should be on your phone - unless your "take a picture" app is the one who does the resizing that is (scaling down from the resolution of
    the camera's sensor to one thats sensible for your phone - the origional
    size could be *huge* and fill up your phones storage rather quickly).

    One has been resized twice!!!! 000010000012_Resized_Resized_20200310_163246.jpeg
    What does that mean?

    My guess ? Both of the above steps resized the origional image.

    Its possible you can change either or both in the configurations of both
    apps, but as long as you can live with the picture quality as you can view
    it on your PC I suggest you leave them alone.

    Regards,
    Rudy Wieser



    --- MBSE BBS v1.1.1 (Linux-x86_64)
    * Origin: A noiseless patient Spider (3:633/280.2@fidonet)
  • From Paul@3:633/280.2 to All on Sun Jun 1 16:57:01 2025
    On Sat, 5/31/2025 8:04 PM, micky wrote:
    What are resized jpeg's?

    how do they get resized? I've never done this on purpose. They're on
    the PC but come from a phone.

    More importantly, if I delete them, is there an original somewhere else? Using Everything to try to find a jpeg without the resized prefix
    doesn't find anything. But I'm sure I have not deleted any other copy.

    I have 36 of them, and they are in my Appdata, in the directory for MyPhoneExplorer, which I use to copy pictures from my phone to my PC,
    and they are in a subdirectory named after my old phone

    They have names like
    000010000006_Resized_20200209_170147.jpeg

    in C:\Users\mmm\AppData\Roaming\MyPhoneExplorer\samsung SM-A305F [354863100416828]\MessageAttachments\000010000006_Resized_20200209_170147.jpeg

    One has been resized twice!!!! 000010000012_Resized_Resized_20200310_163246.jpeg
    What does that mean?

    They seem full-height without losing clarity, so what was the original
    size? But narrow, since they're from a phone,

    **(my persona, mmm, is for micky, micky, micky.)


    https://answers.microsoft.com/en-us/msoffice/forum/all/your-phone-app-photo-are-lower-resolution/62fd65aa-6827-4175-8edb-27cd79a3b1df

    Seeing as the participants bypass the resize by storing
    their images on OneDrive, it's pretty obvious what the
    incentive is for messing with files.

    They could make up an excuse that MTP doesn't do a good job
    of transferring large files, but that is pretty sad as
    an explanation.

    I also found reference to a Bluetooth transfer as an option.

    You're supposed to have access to DCIM on a phone, the manufacturer
    pretending the phone is a digital camera and making only the
    DCIM storage area accessible. But messing with the file size ?
    Find another method. Preferably one that does not use The Cloud.
    Or force you to email the pictures to yourself (because even
    email is not left alone, they can replace "pictures" with "links").

    Paul

    --- MBSE BBS v1.1.1 (Linux-x86_64)
    * Origin: A noiseless patient Spider (3:633/280.2@fidonet)
  • From Paul@3:633/280.2 to All on Sun Jun 1 16:59:51 2025
    On Sun, 6/1/2025 2:27 AM, R.Wieser wrote:
    micky,

    What are resized jpeg's?

    /Most likely/ they are images that have been resized. :-)

    how do they get resized? I've never done this on purpose.
    They're on the PC but come from a phone.

    Its possible that the program which allows you to transfer images from your phone to your PC does that for you automatically. Why ? Because your phone has quite different resolution than your PC, and it makes little sense to keep that resolution on your PC.

    More importantly, if I delete them, is there an original
    somewhere else?

    If there is it should be on your phone - unless your "take a picture" app is the one who does the resizing that is (scaling down from the resolution of the camera's sensor to one thats sensible for your phone - the origional size could be *huge* and fill up your phones storage rather quickly).

    One has been resized twice!!!!
    000010000012_Resized_Resized_20200310_163246.jpeg
    What does that mean?

    My guess ? Both of the above steps resized the origional image.

    Its possible you can change either or both in the configurations of both apps, but as long as you can live with the picture quality as you can view it on your PC I suggest you leave them alone.

    Regards,
    Rudy Wieser

    I didn't collect a lot of threads on this, but one user scoffed
    at the behavior and how "you can't even transfer a 1920x1080".
    It smacks of a Hollywood behavior. Even though the status bits
    on images shot on a phone directly, should not signal in any way
    that Hollywood content is present. The "Do Not Copy" should not
    be set.

    Paul



    --- MBSE BBS v1.1.1 (Linux-x86_64)
    * Origin: A noiseless patient Spider (3:633/280.2@fidonet)
  • From ...winston@3:633/280.2 to All on Sun Jun 1 17:37:40 2025
    micky wrote:
    What are resized jpeg's?

    how do they get resized? I've never done this on purpose. They're on
    the PC but come from a phone.

    More importantly, if I delete them, is there an original somewhere else? Using Everything to try to find a jpeg without the resized prefix
    doesn't find anything. But I'm sure I have not deleted any other copy.

    I have 36 of them, and they are in my Appdata, in the directory for MyPhoneExplorer, which I use to copy pictures from my phone to my PC,
    and they are in a subdirectory named after my old phone

    They have names like
    000010000006_Resized_20200209_170147.jpeg

    in C:\Users\mmm\AppData\Roaming\MyPhoneExplorer\samsung SM-A305F [354863100416828]\MessageAttachments\000010000006_Resized_20200209_170147.jpeg

    One has been resized twice!!!! 000010000012_Resized_Resized_20200310_163246.jpeg
    What does that mean?

    They seem full-height without losing clarity, so what was the original
    size? But narrow, since they're from a phone,

    **(my persona, mmm, is for micky, micky, micky.)


    MyPhoneExplorer iirc is/was an app from a 3rd party software(FJ or
    something similar) but lacked resize features.
    - if that still holds true, then what software are you viewing and
    resizing pics in Windows????
    - GIMP, Paint, Photos, Irfanview, etc.

    For the most part, unless the software is specifically an image-resizer
    set to auto-resize(none of the above fall in that category by default) resizing is user dependent.

    Start with a pic that has not been resized and trace your steps to
    determine what you are using and doing.

    Without knowing specifically what you are doing(opening, viewing,
    saving, etc) its close to impossible to predict where an original size
    image exists that is not on your phone.

    --
    ....w¡ñ§±¤ñ

    --- MBSE BBS v1.1.1 (Linux-x86_64)
    * Origin: A noiseless patient Spider (3:633/280.2@fidonet)
  • From knuttle@3:633/280.2 to All on Sun Jun 1 21:09:23 2025
    On 06/01/2025 2:27 AM, R.Wieser wrote:
    how do they get resized? I've never done this on purpose.
    They're on the PC but come from a phone.
    Its possible that the program which allows you to transfer images from your phone to your PC does that for you automatically. Why ? Because your
    phone has quite different resolution than your PC, and it makes little sense to keep that resolution on your PC.
    It depends on what you do with your pictures. I keep the original
    images of my computer. If I am sending a picture for some one else to
    see, I resize it.

    How ever with the originals I can make infinite copies from the original
    to what ever size I want. If I need specific information from the
    picture, the original can be zoom to see a specific point and I still
    have a good viewable picture with minimal pixelization. IE grain if you
    are an old photographer.

    As an example, when we bought a house, I took dozen of pictures of the
    inside and outside of the house. When we were back home, I could answer
    many question we did not think of by zooming the picture.

    After negotiating with the owner, the question came up about street
    lights. When there I did not see any. I went to my pictures and zoomed
    the several hundered times of a picture from the back yard saw there was pictures a couple house down on the opposite side of the street.

    --- MBSE BBS v1.1.1 (Linux-x86_64)
    * Origin: A noiseless patient Spider (3:633/280.2@fidonet)
  • From knuttle@3:633/280.2 to All on Sun Jun 1 21:19:06 2025
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    --- MBSE BBS v1.1.1 (Linux-x86_64)
    * Origin: A noiseless patient Spider (3:633/280.2@fidonet)
  • From Paul@3:633/280.2 to All on Mon Jun 2 00:54:58 2025
    On Sun, 6/1/2025 7:19 AM, knuttle wrote:
    On 06/01/2025 3:37 AM, ...winston wrote:
    micky wrote:
    What are resized jpeg's?

    how do they get resized?ÿ I've never done this on purpose.ÿ They're on
    the PC but come from a phone.

    More importantly, if I delete them, is there an original somewhere else? >>> Using Everything to try to find a jpeg without the resized prefix
    doesn't find anything.ÿ But I'm sure I have not deleted any other copy.

    I have 36 of them, and they are in my Appdata, in the directory for
    MyPhoneExplorer, which I use to copy pictures from my phone to my PC,
    and they are in a subdirectory named after my old phone

    They have names like
    000010000006_Resized_20200209_170147.jpeg

    in C:\Users\mmm\AppData\Roaming\MyPhoneExplorer\samsung SM-A305F
    [354863100416828]\MessageAttachments\000010000006_Resized_20200209_170147.jpeg

    One has been resized twice!!!!
    000010000012_Resized_Resized_20200310_163246.jpeg
    What does that mean?

    They seem full-height without losing clarity, so what was the original
    size?ÿ But narrow, since they're from a phone,

    **(my persona, mmm, is for micky, micky, micky.)


    MyPhoneExplorer iirc is/was an app from a 3rd party software(FJ or something similar) but lacked resize features.
    ÿÿ- if that still holds true, then what software are you viewing and resizing pics in Windows????
    ÿÿ - GIMP, Paint, Photos, Irfanview, etc.

    For the most part, unless the software is specifically an image-resizer set to auto-resize(none of the above fall in that category by default) resizing is user dependent.

    Start with a pic that has not been resized and trace your steps to determine what you are using and doing.

    Without knowing specifically what you are doing(opening, viewing, saving, etc) its close to impossible to predict where an original size image exists that is not on your phone.

    The question that comes to my mind is if the user is use only resized pictures, Why are they pay hundereds of dollars for a phone that takes high resolution picutures if they only want low resolution pictures.
    It does not make any difference the size of the image, the phone screen has relatively low resolution.

    "The sensor in the main camera of Samsung's latest flagship smartphone,
    the Galaxy S20 Ultra, is a prime example for both these trends. At 1/1.33"
    it's one of the currently largest (only the 1/1.28" chip in the
    Huawei P40 Pro is bigger) and a whopping 108MP resolution allows for
    pixel binning and all sorts of computational imaging wizardry to produce
    12MP high-quality default output."

    And then when you get the file on the computer, it's 1600x1200 :-/

    Maybe the sensor was 1600x1200 the whole time ? o.O

    I expect some of the technical details are a fabrication.

    *******

    You can tell they don't want you to know what is going on in there.
    When anyone has to resort to this. And there isn't a call with a
    mode selector, to just "do it" in a library.

    https://stackoverflow.com/questions/67997981/android-how-to-get-raw-image-data-from-camera

    On my cheap digital camera, the resolution in the images captured,
    seems to match the sensor description for the camera. There isn't
    a large difference between the two to make you suspect shenanigans.

    Paul

    --- MBSE BBS v1.1.1 (Linux-x86_64)
    * Origin: A noiseless patient Spider (3:633/280.2@fidonet)
  • From R.Wieser@3:633/280.2 to All on Mon Jun 2 00:41:40 2025
    Knuttle,

    It depends on what you do with your pictures.

    I can only hope the OP will also read your post ...

    How ever with the originals

    Thats part of the problem : the OP can't find them.

    Regards,
    Rudy Wieser



    --- MBSE BBS v1.1.1 (Linux-x86_64)
    * Origin: A noiseless patient Spider (3:633/280.2@fidonet)
  • From knuttle@3:633/280.2 to All on Mon Jun 2 04:02:34 2025
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    --- MBSE BBS v1.1.1 (Linux-x86_64)
    * Origin: A noiseless patient Spider (3:633/280.2@fidonet)
  • From Paul@3:633/280.2 to All on Mon Jun 2 04:20:47 2025
    On Sun, 6/1/2025 2:02 PM, knuttle wrote:
    On 06/01/2025 10:54 AM, Paul wrote:
    On Sun, 6/1/2025 7:19 AM, knuttle wrote:
    On 06/01/2025 3:37 AM, ...winston wrote:
    micky wrote:
    What are resized jpeg's?

    how do they get resized?ÿ I've never done this on purpose.ÿ They're on >>>>> the PC but come from a phone.

    More importantly, if I delete them, is there an original somewhere else? >>>>> Using Everything to try to find a jpeg without the resized prefix
    doesn't find anything.ÿ But I'm sure I have not deleted any other copy. >>>>>
    I have 36 of them, and they are in my Appdata, in the directory for
    MyPhoneExplorer, which I use to copy pictures from my phone to my PC, >>>>> and they are in a subdirectory named after my old phone

    They have names like
    000010000006_Resized_20200209_170147.jpeg

    in C:\Users\mmm\AppData\Roaming\MyPhoneExplorer\samsung SM-A305F
    [354863100416828]\MessageAttachments\000010000006_Resized_20200209_170147.jpeg

    One has been resized twice!!!!
    000010000012_Resized_Resized_20200310_163246.jpeg
    What does that mean?

    They seem full-height without losing clarity, so what was the original >>>>> size?ÿ But narrow, since they're from a phone,

    **(my persona, mmm, is for micky, micky, micky.)


    MyPhoneExplorer iirc is/was an app from a 3rd party software(FJ or something similar) but lacked resize features.
    ÿÿÿ- if that still holds true, then what software are you viewing and resizing pics in Windows????
    ÿÿÿ - GIMP, Paint, Photos, Irfanview, etc.

    For the most part, unless the software is specifically an image-resizer set to auto-resize(none of the above fall in that category by default) resizing is user dependent.

    Start with a pic that has not been resized and trace your steps to determine what you are using and doing.

    Without knowing specifically what you are doing(opening, viewing, saving, etc) its close to impossible to predict where an original size image exists that is not on your phone.

    The question that comes to my mind is if the user is use only resized pictures, Why are they pay hundereds of dollars for a phone that takes high resolution picutures if they only want low resolution pictures.
    It does not make any difference the size of the image, the phone screen has relatively low resolution.

    "The sensor in the main camera of Samsung's latest flagship smartphone,
    ÿ the Galaxy S20 Ultra, is a prime example for both these trends. At 1/1.33" >> ÿ it's one of the currently largest (only the 1/1.28" chip in the
    ÿ Huawei P40 Pro is bigger) and a whopping 108MP resolution allows for
    ÿ pixel binning and all sorts of computational imaging wizardry to produce >> ÿ 12MP high-quality default output."

    And then when you get the file on the computer, it's 1600x1200 :-/

    Maybe the sensor was 1600x1200 the whole time ? o.O

    I expect some of the technical details are a fabrication.

    *******

    You can tell they don't want you to know what is going on in there.
    When anyone has to resort to this. And there isn't a call with a
    mode selector, to just "do it" in a library.

    ÿÿÿ https://stackoverflow.com/questions/67997981/android-how-to-get-raw-image-data-from-camera

    On my cheap digital camera, the resolution in the images captured,
    seems to match the sensor description for the camera. There isn't
    a large difference between the two to make you suspect shenanigans.

    ÿÿÿ Paul
    While it may not be visually apparent, anytime you change the size of the native image that was captured by the photodetector chip, you change the quality of the image.ÿÿ If you reduce the size of the native image some pixel are thrown out to make the smaller image.ÿ If you increase the size of the native image, the quality is reduced as the software averages the native pixel, to fill in for the missing pixel that were created when the image was made bigger.

    This is similar to a discussion I had with my brother in regard to digital zoom verse optical zoom.ÿÿ With digital zoom, as above, the native pixel in a small part to the native images averaged to create the new pixel required to make the larger zoomed image.

    With an optical zoom the image captured by the photo cell is the image enlarged by the lens.ÿ There is no reduction in the quality by pixel averaging to create the zoomed image.

    When you count picture elements (pixels or pels), a marketing
    person might count at the Bayer filter pattern level. In the
    sample illustration at the top, a 2x2 group of elements allows
    one RGB tuple to be derived.

    https://en.wikipedia.org/wiki/Bayer_filter

    On Electronic News Gathering (ENG) shoulder mount cameras,
    there is a lense, and three separate sensor chips. One chip
    handles red colors, one handles green colors, one handles blue colors.
    If each sensor had 1024x768 elements, the output is 1024x768 RGB pixels.

    Whereas camera sensors use a single sensor and the Bayer layout. They
    do this, because the thickness of the phone, does not allow the same
    optical element sequence (Prisms, reflectors, whatnot) that an ENG
    camera would have, to take one lens image and send a copy to
    three sensors.

    That means, if you started with a SmartPhone 108 million "elements",
    the picture resolution could be 27 million "pixels". I would
    hope if shooting a picture, there should be some capability
    to get all 27 million of them, not 2MB or as little as
    660 thousand of them. That's off by more than an order of magnitude.

    Yes, throwing away pixels is throwing away information,
    information that does not come back. Interpolation does
    not magically add information back. Mathematically, the
    extra info added via interpolation, does not aid any further
    processing, to make the picture look better. If I interpolate
    by a factor of sixteen, or sixty four, or ten twenty four,
    I'm not winning by doing that. So once a pixel is thrown
    away to make an image smaller, it isn't coming back.

    If interpolation was magic, we would do it a million times
    and see galaxies far far away. The extra galactic information
    would appear by magic, in the midst of the million extra
    elements generated by interpolation.

    Paul

    --- MBSE BBS v1.1.1 (Linux-x86_64)
    * Origin: A noiseless patient Spider (3:633/280.2@fidonet)
  • From knuttle@3:633/280.2 to All on Mon Jun 2 04:33:05 2025
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    --- MBSE BBS v1.1.1 (Linux-x86_64)
    * Origin: A noiseless patient Spider (3:633/280.2@fidonet)
  • From Paul@3:633/280.2 to All on Mon Jun 2 07:02:50 2025
    On Sun, 6/1/2025 2:33 PM, knuttle wrote:

    Just like in the old movies where they capture the license plate of the getaway car.ÿ Then take the photo into the lab make multiple enlargements and read the license plate.

    Some things can be fixed.

    https://blog.ampedsoftware.com/2014/10/09/can-you-enhance-that-license-plate

    You can undo systematic transforms to some extent.

    *******

    When you add random noise to a picture, it's pretty hard
    to make a "systematic" correction to improve it.

    If the scene is static (no motion), you shoot two
    pictures with your noisy webcam sensor, if you
    do this in Photoshop

    A + B
    -----
    2

    that does a decent job of reducing the sensor noise a bit.
    Strangely, if you shoot 16 pictures and do that averaging math
    to it, the image does not look that much better than just
    averaging 2 pictures.

    Paul

    --- MBSE BBS v1.1.1 (Linux-x86_64)
    * Origin: A noiseless patient Spider (3:633/280.2@fidonet)