Measure with a coin

Objects are detected from the difference from the background color of the image and can be easily specified by tapping.
How to use:
1.
Specify an image with coins from the camera or file.
2.
Tap the background color.
3.
Check the type and location (blue circle) of the standard coin, and correct it if it is incorrect.
4.
Tap an object you want to measure and the width and height will be displayed.
*Anything other than a coin can be used as a reference, as long as the maximum dimensions are known.
Other uses:
- By pressing and holding the image, you can check the recognized background (black).
- By long-pressing the selected location (green square), you can change the location of the standard coin (blue circle).
- Double tap: Reset image
- Pinch operation: Enlarge / reduce image
- Drag operation: Moving images
Notes:
* Measurements include errors, as dimensions are measured by comparison with coins.
* Accuracy is better if the image is viewed from the front rather than from an angle.
* Viewing the image from the front rather than obliquely improves the accuracy.
* If the app doesn't recognize the background well, try changing the settings or using a solid background image.
* The type of coin can be changed in the settings.
If the coin location (blue circle) is different, tap and select the correct location (green square), then press and hold to correct.
Supported coins:
America dollar, Canada dollar, Australian dollar, England Pound, Japanese yen

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