Android Question Image scaling problems after processing

[Sub7]

I've really tried to understand what's going on but i cannot get it so i give up..

I have a touchimageview, a panel, camera, MESGraphix library to convert in grayscale (no rsimageprocessing because it seems to be too slow at least on my devices),
jpegutils to read image metadata, rsimageprocessing to rotate the image.

I take a picture, convert to grayscale, load the processed image in the touchimageview and it get scaled, zoomed, moved all around, this change from device to device.

For example on my tablet the result cover all the screen but scaled and zoomed, on samsung s3 the result is a little cropped image.

@thedesolatesoul No matter if i save, copy, rename, reload the file, i get the same result, this does not happen if i use rsimageprocessing to convert the image to grayscale but as i said i looks very slow on my 3 devices!

I want to see in my touchimageview exactly the same thing i photographed.

I upload an example (libs included), if someone can help i'll be extremely grateful.

 

[Sub7]

If i don't strasform the image in grayscale everything works.

 

[sorex]

seem to work fine here?

 

[Sub7]

Hi, are you telling me the result image on touchimageview1 is in grayscale exactly what you photographed?
This is what i get:
first pic i commented this: convert = mes.toGrayscale(convert)
Second pic tograyscale enable is what i get while i am trying to get a full size and correctly positioned image.


thanks

 

[sorex]

yes, it is.

the first time the only issue I saw was that it zoomed in too much but it was all there when I zoomed out.

 

[Sub7]

Thank you for testing, this make everything even more problematic
May can i know in which device you tried and os version?

@Erel any input?

Thanks Sorex!

 

[Sub7]

Update:
converting the image using rsimageprocessing library and later getting the scale rect (touchview1.GetScaleRect) give this:
(Rect)(1, 1, 961, 1281) but only after taking 2 pictures and overwriting the file.
The first picture saved get: (Rect)(1, 1, 1, 1)

With the other library the result of GetScaleRect is always (Rect)(1, 1, 1, 1), this must be the problem.

Anyone?

Good morning.

 

[sorex]

it was on a Samsung GIO phone

 

[Sub7]

I give up, i think that the libraby MESGRaphix may be is bugged, another user reporting the same issue.

"Maybe bugreport to the lib:

Dim BM As Bitmap, Wid, Ht As Int
BM.initialize(File.DirAssets, "picture.jpg") '200 x 200 pixels
BM = BMP.toGrayscale(BM)

Grayscale result of the picture is also 200 x 200 pixels, but contain the left-top scaled up corner of the picture."

 

[LucaMs]

If this can console yourself, my image does not become grayscale!

 

[Sub7]

The problem is not converting the image into grayscale but the resultant image that's scaled up.
i'll use another lib, my patience has reach his limit

 

[LucaMs]

The problem is not converting the image into grayscale but the resultant image that's scaled up.
i'll use another lib, my patience has reach his limit

I know that that was not the problem. I wrote that for consolation, to tell you that my attempt to recreate your project gives me that error.
But I'm not devoting time to find the bug

 

[Informatix]

The problem is not converting the image into grayscale but the resultant image that's scaled up.
i'll use another lib, my patience has reach his limit

If you load your bitmaps with LoadBitmap or LoadBitmapSample (or their corresponding Initialize function), you're going to face a problem of density and thus a problem of scaling with ImageViews. To avoid this, you should use the LoadScaledBitmap function of my Accelerated Surface library (class AS_ImageUtils). The scaling parameters can be set to -1 for no scale change. By the way, you will be able to convert your images to grayscale in a very efficient way with the AlterColors function of the same class.

 

[Sub7]

Thank you Informatix, i was just messing with your library!