why acrobat can't recognize some text in gif file?

[abolfazl29032603daba]

Can anyone tell me why acrobat OCR can't recognize "Apr-14" in attached transparent gif file? where is the problem? 

[gary_sc]

Hi, @abolfazl29032603daba, I do not know, I'm stumped.

Where was this created? How was this created?

[abolfazl29032603daba]

this is created from chart image. i have high number of gif files exactly similar this and in other gif files acrobat can't recognize dates like "Apr-14"!!! 

only values recognized in all images!

[abolfazl29032603daba]

i attach result of all gif files that i OCR by acrobat. you can see in no one of gif files it can't recognize date!! 

[abolfazl29032603daba]

only "Hyphen" of dates recognized!

[gary_sc]

But HOW was it created? Was this from a website? From an application? Was it a screenshot or saved as a gif file from an application?

[The following has absolutely no bearing on your issue, but I'm including it because you might find it helpful for other projects.] Here are some tips on file formats: GIF image format is inferior to PNG format with no discernable advantage unless you need/want a GIF animation. GIF images are Indexed, which is not as flexible as RGB images and derives from the old days of computers and monitors when you only had 256 possible shades/colors/hues. (A PNG-8 image also can only have 256 shades/colors/hues but is not limited to which shade/color/hue.)

If you save an image in the TIF format, when you open a TIF image in Acrobat, it will automatically convert it to a PDF but also apply OCR at the same time without any extra intervention on your part. 

Needless to say, I tried converting your image into other formats with no success in getting the date. So, like I said

[abolfazl29032603daba]

it created by photoshop and using "Saved As..." feature in GIF foramt because PNG format make high CPU usage for export image and i want to batch editing. 

[gary_sc]

OK, how did the image get from its source (??) to Photoshop? Please explain your entire process.

Have you tried TIF?

[abolfazl29032603daba]

I extracted a youtube chart bar race video frames and aligned values of frames and saved as GIF in photoshop. 

i tried PNG only and GIF. 

If the problem is with the format of my images, why are all the values recognized and not just the dates? even "Hyphen" of dates recognized!

[abolfazl29032603daba]

even i changed color of dates and it not recognized them!

[gary_sc]

Hi, the color would not make a bit of difference. 

I gather that this is from a website, can you send me a link?

[abolfazl29032603daba]

Hi, the color would not make a bit of difference. 

I gather that this is from a website, can you send me a link?

By @gary_sc

I tell you. this is from a youtube video frame!

[abolfazl29032603daba]

google lens could recognize dates but i don't know why acrobat can't 

i created this image from gif that attached to this reply 

Interestingly, Acrobat recognizes the date in this attached image, but not in the edited image! 

[gary_sc]

Done, no problem