size of the image about imageclipper

[JoakimSoderberg]

Hello,

It's quite a bit of time since I used this program myself. So I don't even remember if I've even tried such a highres image. Especially at the time this tool was written I guess working with such highres images in relation to object detection was not even something considered.

However looking at the code:

imageclipper/src/imageclipper.cpp

Line 242 in c5d6142

cvShowCroppedImage(param->miniw_name, param->img_src, cvRect32fFromRect(cvScaleRect(param->rect, 1 / param->scale_factor), param->rotate), cvPointTo32f(param->shear), param->cap_scale_factor);

To show the image this OpenCV function is used:

imageclipper/src/opencvx/cvcropimageroi.h

Lines 152 to 170 in 5efa5a0

	CVAPI(void) cvShowCroppedImage(const char* w_name, IplImage* img, CvRect32f rect32f, CvPoint2D32f shear, float cap_scale_factor)
	{
	CvRect rect = cvRectFromRect32f(rect32f);
	if (rect.width <= 0 || rect.height <= 0) return;
	IplImage* crop = cvCreateImage(cvSize(rect.width, rect.height), img->depth, img->nChannels);
	cvCropImageROI(img, crop, rect32f, shear);
	if (cap_scale_factor != 1.0f)
	{
	IplImage* crop_resize = cvCreateImage(cvSize(rect.width * cap_scale_factor, rect.height * cap_scale_factor), img->depth, img->nChannels);
	cvResize(crop, crop_resize);
	cvShowImage(w_name, crop);
	cvReleaseImage(&crop_resize);
	}
	else
	cvShowImage(w_name, crop);
	cvReleaseImage(&crop);
	}

This crops the image to the scale factor as you see... so maybe fiddling with that might help?

The instructions for the tool written by the original author can be found here:
https://code.google.com/archive/p/imageclipper/

[JoakimSoderberg]

@vojt-a Anything to add?

[vojtechabraham]

Dear Joakim,
thank you for the answer, SOLVED! I found another application: XnView MP - https://www.xnview.com/en/ . It has a very nice button "CLIP & SAVE & NEXT" , so you just open the first picture of the folder and then it goes fast.