Open unknown image format (probably a RAW image)

Question

I copy image files here from a linux based system which ends with .bin.

Unfortunately I don't know how to open it. The goal is to convert images to this format later.

What I have already tried:

• Open the File with a RAW image Viewer (was not successful).
• looked at the files with the Hex Editor to find out information about the structure (was not successful).
• to make sure that these are the images from the menu, I swapped 2 files with each other (swap the file name) (has worked).

This is how it looks on the device:

I have uploaded the two files here.

https://drive.google.com/file/d/1WXbuqT7B-_1OdHZjScmWMKHKxfEUzta7/view?usp=sharing https://drive.google.com/file/d/1YN_TbwWevuNQ3_Ha6MikOA_5JX8h1Pu1/view?usp=sharing

--UPDATE--

//---------------------------------------------------------------//

Here I have cloned some other flags from the device:

Espanol:

https://drive.google.com/file/d/18FE-nT7DMDmNvPtT3lMzARdjcUItpUSu/view?usp=sharing

English:

https://drive.google.com/file/d/1Qqr-ZKyT1M5ichLXBKRRBJzxaPDEpSGg/view?usp=sharing

Portugues:

https://drive.google.com/file/d/13DYM1-Di7bI_KXvT4Eo9zC6x-jIwX0jX/view?usp=sharing

Here also two random pictures of the GUI:

https://drive.google.com/file/d/1oulgopsKGIkpUQ12_94twBaNlVkToKxI/view?usp=sharing https://drive.google.com/file/d/1E9Tx2S86tP2B_z84Fe_6LWO-RZxSEVtD/view?usp=sharing

This should be these images (once highlighted and once normal):

//---------------------------------------------------------------//

Here are 2 copies of the 2 files from a hex editor

img_togglelanguage_ru_ovg.bin:

FF FF FF FF 00 FF FF FF FF 00 E2 FF FF FF 00 01 1A 1A 1A 2D 1A 1A 1A C3 99 1A 1A 1A FF 01 1A 1A 1A C0 1A 1A 1A 2D 88 FF FF FF 00 00 1A 1A 1A CF 9B 1A 1A 1A FF 00 1A 1A 1A CF 88 FF FF FF 00 81 1A 1A 1A FF 99 FF FF FF FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 FF FF FF FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 FF FF FF FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 FF FF FF FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 FF FF FF FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 00 00 FF FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 00 00 FF FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 00 00 FF FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 00 00 FF FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 00 00 FF FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 00 00 FF FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 FF 00 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 FF 00 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 FF 00 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 FF 00 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 FF 00 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 FF 00 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 00 1A 1A 1A D2 9B 1A 1A 1A FF 00 1A 1A 1A CF 88 FF FF FF 00 01 1A 1A 1A 39 1A 1A 1A D2 99 1A 1A 1A FF 01 1A 1A 1A C9 1A 1A 1A 2D FF FF FF FF 00 FF FF FF FF 00 E3 FF FF FF 00

img_togglelanguage_de_ovg.bin:

FF FF FF FF 00 FF FF FF FF 00 E2 FF FF FF 00 01 1A 1A 1A 2D 1A 1A 1A C3 99 1A 1A 1A FF 01 1A 1A 1A C0 1A 1A 1A 2D 88 FF FF FF 00 00 1A 1A 1A CF 9B 1A 1A 1A FF 00 1A 1A 1A CF 88 FF FF FF 00 81 1A 1A 1A FF 99 00 00 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 00 00 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 00 00 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 00 00 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 00 00 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 DE 00 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 DE 00 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 DE 00 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 DE 00 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 DE 00 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 DE 00 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 FF CF 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 FF CF 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 FF CF 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 FF CF 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 FF CF 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 81 1A 1A 1A FF 99 FF CF 00 FF 81 1A 1A 1A FF 88 FF FF FF 00 00 1A 1A 1A D2 9B 1A 1A 1A FF 00 1A 1A 1A CF 88 FF FF FF 00 01 1A 1A 1A 39 1A 1A 1A D2 99 1A 1A 1A FF 01 1A 1A 1A C9 1A 1A 1A 2D FF FF FF FF 00 FF FF FF FF 00 E3 FF FF FF 00

Maybe someone knows more than me.

Answer 1

Based on those images, this appears to be a fairly straight-forward run-length encoded 32-bits-per-pixel bitmap format. The general structure seems to consist of number of records each with a single 'tag' byte followed by a multiple of 4 bytes of RGBA data. These records appear to encapsulate pixel data only, with no dimensions or other metadata.

The structure of these pixel records appears to be as follows -

tag  data
byte bytes
==== ===========
// literal pixel records
 00  RR GG BB AA                      => specifies colour of the next single RGBA pixel 
 01  RR GG BB AA  RR GG BB AA         => specifies colours of the next 2 RGBA pixels
 02  RR GG BB AA  RR GG BB AA  .. etc => specifies colours of the next 3 RGBA pixels
 03  ..
 ..
 19  RR GG BB AA  RR GG BB AA  .. etc => specifies colours of the next 26 RGBA pixels
 ..
// run-length encoded pixel records
 81  RR GG BB AA              => colour RGBA is used for the next 2 pixels
 82  RR GG BB AA              => colour RGBA is used for the next 3 pixels
 83  RR GG BB AA              => colour RGBA is used for the next 4 pixels
 ...
 88  RR GG BB AA              => colour RGBA is used for the next 9 pixels
 ...
 99  RR GG BB AA              => colour RGBA is used for the next 26 pixels    
 9A  RR GG BB AA              => colour RGBA is used for the next 27 pixels    
 9B  RR GG BB AA              => colour RGBA is used for the next 28 pixels    
 ...
 E2  RR GG BB AA              => colour RGBA is used for the next 99 pixels 
 ...   
 FF  RR GG BB AA              => colour RGBA is used for the next 128 pixels    

The image dimensions need to worked out by inspection. The flag images you provided are all 39 x 39. The other 2 images have dimensions 172x207 and 148x186. The flag images especially have borders and do use the RGBA alpha channel.

---

Here's what the images look like -

Answer 2

I've further looked at this format and made a decoder here:

https://github.com/cr3ative/rcd_330g_logo_utilities/blob/master/ovg_to_png.py

The tag byte Ian describes in the other answer is detailed here:

https://www.nxp.com.cn/docs/en/application-note/AN4339.pdf