Simple image one line text not recognized for some mysterious reason

[naourass]

Current Behavior

Among many similar images (same dimension/layout/content) that have been ocr'd correctly, this one returns an empty string:

I tried with ara and Arabic, both fast and best, different PSMs. I always get an empty string for that image.

Any idea for what could cause this behavior? And is there any workaround?

Version

tesseract 5.3.0-31-g9d71
leptonica-1.79.0
libgif 5.1.4 : libjpeg 8d (libjpeg-turbo 2.0.3) : libpng 1.6.37 : libtiff 4.1.0 : zlib 1.2.11 : libwebp 0.6.1 : libopenjp2 2.3.1
Found AVX2
Found AVX
Found FMA
Found SSE4.1
Found OpenMP 201511
Found libarchive 3.4.0 zlib/1.2.11 liblzma/5.2.4 bz2lib/1.0.8 liblz4/1.9.2 libzstd/1.4.4
Found libcurl/7.68.0 OpenSSL/1.1.1f zlib/1.2.11 brotli/1.0.7 libidn2/2.3.0 libpsl/0.21.0 (+libidn2/2.2.0) libssh/0.9.3/openssl/zlib nghttp2/1.40.0 librtmp/2.3

Operating System

Ubuntu 20.04 Focal under WSL2 Windows 11
Linux DESKTOP-586TDC4 5.15.90.1-microsoft-standard-WSL2 #1 SMP Fri Jan 27 02:56:13 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

CPU

Intel(R) Core(TM) i7-9700

[amitdo]

You can try this command:

convert image.png -bordercolor White -border 4x4 image-4-4-wb.png

[naourass]

@amitdo
I tried that and it still doesn't work unfortunately. I tried with different crops / margins (tried both odd and even numbers) but it always fails to detect the content of that image!