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Bodmer / JPEGDecoder

A JPEG decoder library
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Incoherent "y + JpegDec.MCUHeight*mcuY" #55

Closed Barrois closed 3 years ago

Barrois commented 3 years ago

Hi, I would like to detect an Asian hornet in a photo taken by Esp32-Cam, but when I decode Jpegs there are sometimes incomprehensible jumps in the "y + JpegDec.MCUHeight * mcuY": Serial.print (s_s_x); Serial.print (","); Serial.print (s_s_y); // Serial.print ("and its color is:"); Serial.print (","); Serial.println (s_gris); gives: 13, 36, 248 14, 36, 248 15, 36, 248 0, 37, 248 1, 3973, 248 2, 3973, 248 3, 3973, 248 is this normal? Why these sudden jumps? is this an effect of jpeg encoding ? Do we have to count the coordinates separately? Thank you for your reply !

Bodmer commented 3 years ago

I suspect there is a bug somewhere in your sketch. Without seeing more of your code I can only guess where. One possibility is that you are running out of memory and variables are being corrupted.

Barrois commented 3 years ago

I hope that

Thanks !

Bernard BARROIS

Barrois commented 3 years ago

Oh, I'm a little disappointed with your short answer, could you take a look at my code for a few moments and give me some leads? Thanks in advance

Bernard BARROIS

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Message du 08/11/20 00:32 De : "Bodmer" A : "Bodmer/JPEGDecoder" Copie à : "Barrois" , "Author" Objet : Re: [Bodmer/JPEGDecoder] Incoherent  "y + JpegDec.MCUHeight*mcuY" (#55)

Closed #55.

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Bodmer commented 3 years ago

I suspect there is a bug somewhere in your sketch. Without seeing more of your code I can only guess where. Post a complete sketch.