ecg gen: README update

codes/ecg-image-generator/README.md

@@ -57,7 +57,7 @@ The basic mode of the tool creates ECG images without distortions. The mode of o
 - `-r`: Resolution with default being 200; type: int
 - `--pad_inches`: Padding of white border along the image with default padding of 0 inches; type: int
 - `--print_header`: Add text from header file on all the generated images; default: False
-- `--add_qr_code`: Add QR code to all the generated images, default: False.
+- `--add_qr_code`: Add QR code to all the generated images, default: False. The QR code links to the relative path of the WFDB file used to generate the ECG image. 
 - `--num_columns` : Number of columns of the ECG leads. The default(-1) will plot a single column for 2 lead data and 4 columns for the 12 or any other number of lead data. Default: -1; type: int
 - `--full_mode`: Sets the lead to add at the bottom of the paper ECG as a long strip obtained from the WFDB record's `.hea` header file, if the lead II is not available plots the first lead from the header file; default: `'II'`; type: str
 - `--mask_unplotted_samples`: Mask the samples not plotted in the images in the generated WFDB signal file; default: False. For example: for the 3x4 format, the code plots 2.5 seconds of each lead on the image and saves the complete signal in the WFDB file. If the flag is set, the code will mask the part of the signal not plotted in the image (In this case, t > 2.5seconds) with Nan values in the modified WFDB file.