Finding the Cut From HERE Part with OpenCV

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5

Good afternoon Ale,

I tried to work out your random thoughts on this problem but didn’t found any solutions yet

For Thought 1, I can’t do that. The code needs to be executed within 4 seconds and the work, other than the OpenCV work, is taking 2500ms so I can’t do multiple searches.

For Thought 2, I converted the base and template image to grayscale using the Sharp Library but it didn’t work.

For Thought 3. I am not sure that I had done it in the right way but it didn’t work either.

This was the code i used for the 3rd thought:

sharp(imagePath).trim().toBuffer()
        .then(async (buffer) => {
            /**
             * Removed White Space
             * Now find the location of dashed line part with openCV
             */
            let trimImage = sharp(buffer);

            let { width, height } = await trimImage.metadata();

            let findBuffer = await sharp("./findAA.jpeg").resize(width).toBuffer();

            let img1 = await loadImage(buffer);
            let img2 = await loadImage(findBuffer);


            img1 = cv.imread(img1);
            img2 = cv.imread(img2);

            let canIn = createCanvas();
            cv.imshow(canIn, img1);

            let canFi = createCanvas();
            cv.imshow(canFi, img2);

            let src = cv.imread(canIn);
            const temp = cv.imread(canFi);

            let dest = new cv.Mat();
            let mask = new cv.Mat();

            cv.threshold(src, dest, 177, 200, cv.THRESH_BINARY);
            cv.threshold(temp, mask, 177, 200, cv.THRESH_BINARY);

            cv.matchTemplate(src, temp, dest, cv.TM_CCOEFF_NORMED, mask);

            let result = cv.minMaxLoc(dest, mask);
            let maxPoint = result.maxLoc;
            src.delete(); dest.delete(); mask.delete();

            // Position from top where the dashed line was found
            let cvTop = maxPoint.y + 8;


            trimImage
                .extract({ top: cvTop, left: 0, width: width, height: (height - cvTop) })
                .toFile("./croppedFinal.jpeg");
        })

For Thought 4, I don’t know what it is. Just started with OpenCV. So i don’t have much knowledge of its patterns.

For Thought 5, I Followed the link but I didn’t get it. sry.

Below is that greenish background image on which the code is not working quite well.

exceptionImage
exceptionImage2479×3504 759 KB