Need help with captcha about cbl-js HOT 1 OPEN

First of all, thanks for providing images and your existing code.

Looks like something is wrong with your model.

Which is probably due to the missing preprocessing. Since there's a border I'd at least crop that out.

img.cropRelative(1, 1, 1, 1);

Also, this image is interesting since it has a transparent black background, meaning technically the entire image is the same color. The characters are black and the background is transparent black. To get this to work I had to add a new method to the library. You'll need to download the latest version to use this.

img.removeTransparency();

So your training script would be something like this.

var cbl = new CBL({
    preprocess: function(img) {
        img.debugImage("debugPreprocessed");
        img.cropRelative(1, 1, 1, 1);
        img.debugImage("debugPreprocessed");
        img.removeTransparency();
        img.debugImage("debugPreprocessed");
        img.colorRegions(1, true);
        img.debugImage("debugPreprocessed");
    },
    character_set: "0123456789abcdefghijklmnopqrstuvwxyz",
    exact_characters: 5,
    pattern_width: 24,
    pattern_height: 24,
    blob_min_pixels: 1,
    blob_max_pixels: 10000,
    allow_console_log: true,
    blob_console_debug: true,
    blob_debug: "debugSegmented"
});

And then your solving script would use the same preprocess steps and have the trained model_string like you did in your example.

from cbl-js.