[iOS] Pupil Distance Meter Simple Edition: quick and simple Pupillary Distance measure

Pupil Distance Meter is a tool for quick PD measurements using a rear or front camera on your mobile device and any standard card (e.g. gift card, id card, credit card, etc)

Simple Edition of the app has simple measurement procedure that allows you to achieve more accurate and consistent measurement results.

 

Pupil Distance Meter Simple Edition.

How to use:

1. Take a face picture with a reference card (see picture below how to hold the card properly)
2. Mark eye pupils with the white ruler 
3. Mark a reference card length with the blue ruler
4. See PD result  at the top

For accurate and repeatable measurements you would need to hold a reference card next to your eye corner on the left or right side of your face. The card  has to be on the same vertical plane with your eye pupils and be parallel to the camera / display. 

How to hold a reference card properly

For the best result do not bring the camera close to your face and keep it at arm's length or farther. Don't focus your eyes on the camera when taking a picture, try to look "through" the device - by doing this you can avoid bringing additional error when fixing  pupils at one point.
As a final step make sure your PD result is within normal measurement range:  50 - 78 mm for adults (41- 55 mm for kids). If it's not, please check the above instructions thoroughly and try again.

If you have questions about the app or have improvement suggestions, please contact us.

[Android] Pupil Distance Meter v2: improved design, performance and accuracy.

Pupil Distance Meter is a tool for quick PD measurements using a rear or front camera on your mobile device and any standard card (e.g. gift card, id card, credit card, etc)

Version 2.0 of the app has new design, improved performance and slightly simplified measurement procedure that allows you to achieve more accurate and consistent measurement results.

Pupil Distance Meter 2.0. New design.

How to use:

1. Take or load a face picture with a reference card (see picture below how to hold the card properly)
2. Mark eye pupils with the white ruler 
3. Mark a reference card length with the card template (green)
4. See PD result 

For accurate and repeatable measurements you would need to hold a reference card next to your eye corner on the left or right side of your face. The card  has to be on the same vertical plane with your eye pupils and be parallel to the camera / display. 

How to hold a reference card properly

For the best result do not bring the camera close to your face and keep it at arm's length or farther. Don't focus your eyes on the camera when taking a picture, try to look "through" the device - by doing this you can avoid bringing additional error when fixing  pupils at one point.
As a final step make sure your PD result is within normal measurement range:  50 - 78 mm for adults (41- 55 mm for kids). If it's not, please check the above instructions thoroughly and try again.

If you have questions about the app or have improvement suggestions, please contact us.

[iOS] Quick Guide for Partometer3D for iPhone / iPad.

(click image to see full size)

What is my face shape?

Have you ever had a question "What is my face shape"? Here is the answer...
Face Shape Meter, a simple and easy tool for identifying your face shape from your picture, has been recently published on the App Store. 

This app will help you to find out your face shape quickly, without using any additional measurement tools and techniques.

Knowing your face shape can be useful in many different areas. For example, you would need to know your shape of face for finding “the right” haircut or hairstyle, sun glasses that fit you well, the best makeup for your face, or even wig or hat that suits you best.
How it works: 

1. make or upload picture
2. outline / measure your face with special contour as shown on screenshots
3. press Show Face Shape button and see the result

 

Tips:

• For best result use a picture with neutral face expression, where your head is directed straight to the camera. Turning your head might affect the final result.
• Before measurements make sure your hairline is visible

[iOS] Partometer3D - camera tool for measurements on photos.

The first version of Partometer3D app for iOS is now available on the App Store. 

The main goal of this app is to perform measurements on pictures taken from any view angle (parallel  or not parallel to a camera). Please check this presentation for more info. 

The app also allows users to do measurements on stretched pictures. The app requires to set a measurement plane using any rectangular object of known size or w/r ratio. 

If W/H Ratio option is used for setting the measurement plane, additional Reference Object Length (ROL) has to be used to set a scale of this plane. See an example of using W/R ratio and ROL for measurements in our previous post about Partometer3D on Android.

The following video is a short demonstration of measurements with Partometer3D and accuracy test for length, angle, circle diameter values: 

In the demo video A4 sheet is used to define the measurement plane. Width of the sheet is measured in the Length Mode to see the measurement accuracy in this plane. Then Angle Mode demonstrated with angle and sheet sides measurements. Diameter of a circle (72 mm) is measured in the Circle Mode using special 3-point ruler for bounding circular objects in the plane. 

If you have questions about the app or have improvement suggestions, we will be glad to hear from you in comments below or by e-mail.

How-To: do measurements using camera and common objects of known W/H ratio and length in "Partometer3D - camera measure"

Presentation about Partometer3D.

Task: measure pencil accurately using square wooden tile and credit card.

How to measure:

I use square wooden tile to define the measurement plane. I don't know its dimensions, but I know that it's SQUARE:

- I go to Preferences and select Measurement Plane as Custom Plane.
- Then in How plane is defined I select Only W/H Ratio.
- Then in Custom Plane W/H Ratio I enter 1.0 (square shape).

Now with this settings I can define measurement plane using the wooden tile. I need to set the scale for the measurement plane in selected units (mm). To do this I place a credit card on the plane and use its LONG side as a reference (ROL). 

Then I set ROL size in Preferences:

1. Using ROL is selected automatically.
2. Touch Reference Object Length and select Credit card (Long Side) from the list.

Now I am ready to measure:
- bound the wooden tile with reference box on the screen.
- use blue ruler (ROL) to mark the credit card length
- measure the pencil with white ruler!

Please note, in this example if I use a wooden tile of known size I don't need ROL for measurements - the tile would define the plane and scale automatically as soon as we select corresponding option in Preferences and enter its dimensions.

Note:

1. Use option menu button to open Preferences in the menu. On some devices it appears as a "..." (three dots) button as you can see on the screenshots in the upper right corner. You might have a problem with this button on Samsung devices, in this case please check our post:
http://vistechprojects.blogspot.com/search/label/Samsung

2."ROL" and " W / H" boxes in the lower left corner are touchable and you can do SHORT or LONG touches as a shortcut for plane and ROL settings.

3. Measurement accuracy depends on how accurate you mark your references. Please select bigger reference objects to get better result. In this presentation sheet of paper is a good choice for measurements of small objects (screws, rings, etc) on it.

The Angle Mode in Partometer app on Android has been improved v4.5 update. [VIDEO]

New Partometer update v4.5 brings requested improvement to the Angle Mode. Now you can measure angles that are not visible or partially visible on the screen. It is achieved with the new option of using two independent (not connected) rulers for angle measurements.

The pictures below demonstrates how the new feature can be used:

Angle Mode in Partometer v4.5

For example, the new feature can be applied for the pipe bend estimation. If the diameter of a pipe is known, it can be used as a scale reference. Then bend angle and bend radius are easy to measure using the app. 

Important condition for accurate measurements here is to keep object plane parallel to the camera plane to avoid picture distortion.

Watch the demo video below and let us know if you have any suggestions or comments:

*Also the button panel has been extended with the menu button for the Samsung users who had issues with reaching different measurement modes.

Update v1.3.1 for Partometer App on iOS submitted to AppStore for review.

UPDATE: 
14-Mar-2015:
Partometer update v1.3.2 passed AppStore review and should be available for download shortly. Let us know if you have any issues with the app.
We appreciate your patience and collaboration.

07-Mar-2015: v1.3.2 update with stability improvements on iPads with iOS 8.1 sent for review and should be available in AppStore soon.


It has been reported that recent Partometer update v1.3.0 has an issue with camera and photo loading on iPad devices on iOS v8.1.3. The bug has been fixed and v1.3.1 had been sent for review to AppStore. It should be available for download soon.
Thank you for your patience!

New Tire Pressure Calculator Application from MICHELIN.

Michelin Pressure Calculator Application has been recently published on Google Play. The application calculates proper tire pressure for tractors based on user inputs. VisTech.Projects has participated in this project as a developer.

One of distinctive features of this app is the ability to perform measurements on pictures. We have implemented it as a “camera measure module” based on our technology used in Partometer application and adapted it for quick and convenient estimation of wheelbase and other distances needed for pressure calculation.

The application is simple and easy to use and has options to save, view and share data reports. French, English, Spanish and German are supported. 

Farmers can use this tool for quick pressure calculations for different Tire / Tool configurations.

Partometer - your camera tape measure. Calibrate once, measure as many as you want.

Once calibrated using known object, Partometer App   allows you to do multiple measurements in the plane. Measurement plane has to be parallel to the camera. Measurement results can be shown in different units along with relative (to a reference) values. It helps to divide the object in certain ratio. If an object doesn’t fit into camera view you can take a picture from a side and use Partometer3D App that extends functionality of Partometer to any defined plane in 3D.

Diskometer - camera measure. User feedback.

Post by Robert Picone.

Laser Distance Meter - camera measure. Measure distances with camera on Android phone or tablet.

LaserDistanceMeter is a camera measure tool for quick estimation of distances and length. You can use any reference object with known size for measurements. Laser Distance Meter has also automatic mode where you can make a measurement with only one click!

Any android camera device, phone or tablet, can be used for measurements. Just follow the procedure to calibrate your device and you are ready to measure distances to any object with your camera.

Using standard objects like a car, window, golf flag, human height, etc. as a reference you can measure distances - just select Custom option and enter the object size.

LaserDistanceMeter has a list of commonly used reference objects like credit card, Letter or A4 sheet, coins, DVD disk, etc.

The App shows measurement results in different units: meters, millimeters, centimeters, feet, inches based on user settings. 
    
There is an option to make a picture or load a picture from gallery, Zoom View feature helps to align object boundaries accurately.
    
Features:

    - measure distance to known size objects
    - automatic measurement mode
    - different measurement units
    - list of predefined reference objects
    - ability to define any custom object as a reference object
    - ability to calibrate any android camera to use for measurements
    - quick calibration with predefined standard objects.


This app can be useful for outdoor and sport activities: golf, hiking, traveling,  etc., where quick estimation of distances is needed.  It also can be used for measurements in a room or small objects measurements.

Using Custom option you can make measurements in wide range depending on a reference size: from mm to km, from inches to miles.

Diskometer - camera measure. User feedback.

Post by Robert Picone.

Post by Robert Picone.

Partometer3D - camera measure. Measurements with your camera on photos in any defined plane in 3D.

Partometer3D  is a handy tool for object dimensions measurements. It  can be used as a ruler or tape measure, or remote measurement device. 

This app allows user to make measurements in defined plane in 3D . The measurement plane / object plane does not have to be parallel to the camera plane. It expands number of situations where application can be used. For example, big objects now can be measured by taking a picture at some angle (from a side), objects and distances that are difficult to reach can be measured as well. 

The app has following important and  distinctive features:

- measure in any selected plane in 3D space

- add/delete  any number of measurement lines/rulers

- values assigned to each ruler line

- measure objects in different directions

- save and share you measurement 

- find object ratios, if you don't not need absolute measurements

- compare object parts to each other

- use custom and predefined reference objects

- automatic reference object fine alignment using image processing

Partometer3D uses a phone/tablet camera and any available object with known size as a reference to perform measurement. To define the measurement plane a rectangular object  (e.g. sheet of paper, credit card, custom object) is used. Image processing is used for automatic edge alignment with the reference object.

The app shows measurement results in different units: meters, millimeters, centimeters, feet, inches based on user settings. It also calculate dimensions of the object in relative units with respect to  the reference object (ROL). 

    

There is an option to make a picture and work with the still image instead of live camera view. Picture Load feature is also implemented to work with any picture from your photo gallery. Zoom View feature helps to align object boundaries accurately. Partomter3D can be very useful if you need to measure dimensions, where a simple ruler or measure tape is difficult to apply. 

Circle Measurements on photos using Partometer App for iOS.

New Circle Mode has been added to Partometer app on iOS with the update v1.2.0. 

Circle Radius, Length and Area can be measured using the new mode. 

Special 3-point ruler allows users to mark and measure even partially visible circles. Also it  helps to find the center of a circle.

Pupil Distance Meter on iOS: new approach for accuracy improvement

Our Pupil Distance Meter (PDM) app is currently available on both platforms Android and iOS. Though  these two apps are named the same they use different methods for PD calculation.

We have listened to feedback from Android users and have updated the app webpage with guide and tips how to improve measurements accuracy. The method used in the Android version is sensitive to measurement conditions and requires proper head and reference position and very accurate rulers adjustment. Although the app does image processing and quick automatic measurements, sometimes it is necessary  to correct rulers position manually.

However the app users tend to use the PDM without browsing the guide and following important tips. For such app lack of attention to the details usually causes misunderstanding of the measurement procedure and inaccuracy in calculations.

Based on Android experience we have come up with a new idea for the PD measurement and decided to implement it on iOS platform first. The main goal of the iOS version of the app is to test a new approach, to improve accuracy and consistency of measurement results and app usability in general.

First version of the iOS app offers manual measurements and requires two different pictures of a face for accurate PD calculations. Although we have tried to automate the process of taking pictures, pupils and a reference have to be accurately marked on both pictures manually. Working with two pictures might take more time for a measurement session but it improves accuracy of the results.

Users are still required to follow the instructions and put some effort into learning the measurement procedure, but it is common for such apps and as soon as they are familiar with the app  good results can be achieved.

As we expected the new method appears to be quite accurate and not so sensitive to the measurement conditions but still is very sensitive to accurate rulers alignment on both pictures. Simulation and accuracy test results  are presented on the app webpage where you can compare it with usual ruler measurements.

Based on our tests Pupil Distance Meter app for iOS returns more accurate and repeatable results compared to other apps on the market for this purpose. It also shows big improvement compared to our Android version of the app.

We plan to update the Android version of the app with the new method currently used in the iOS version. Any feedback or suggestions are welcome.