Publication Date: 2015-Mar-10
The IP.com Prior Art Database
The present invention provides a technique for introducing biometric system capability to allow user to place a caliper measure with his or her hand touch over a scanned image. The technique provides the system to allow user to draw the calipers over the scanned image. Upon user confirmation, the system applies uniform/regular caliper shape. A user applies required measurement on a selected image area with touch and free hand or system allows user to apply two touch points or three touch points as input to auto calculate distance or ellipse measure on the image. Next the system seeks confirmation from user for accepting or rejecting measurement drawn. The confirmation invokes an algorithm to recalculate based on the nearest pixel to applied region to display a uniform structure. Any alteration to applied measurement system allows in edit form to perform the changes.
The present invention relates generally to ultrasound touch based system and more particularly to a technique of applying caliper measure over a scanned image..
Generally, auto fetal biometry (AFB) algorithm automatically generates fetal biometry measurements in an ultrasound study. However, there are certain problems associated with AFB. For example, AFB requires time to calculate measurements. Also in certain instances the AFB algorithm computes measurements for similar looking false structures.
A conventional technique includes freehand ultrasound imaging systems and methods that provides position quality feedback.
However, in conventional biometric system, in order to draw line, user has to define start and end points or draw a line with two fingers. Also measurements are applied on scanned image by having start and end points and increase or decrease of the desired values are adjusted by two fingers placed and dragged over the image.
It would be desirable to have an efficient technique to allow a user to draw a caliper with his finger touch over a scanned image.
BRIEF DESCRIPTION OF DRAWINGS
Figure 1 depicts touch based measurement by free hand drawing of user.
Figure 2 depicts ellipse measurement calculation.
Figure 3 depicts distance measurement using two finger points at two end points for a line.
Figure 4 depicts ellipse measurement using three finger points for ellipse or circle.
Figure 5 depicts automatic measurements approximation by calculation of x and y-axis.
Figure 6 depicts an overview of femur length measurement.
Figure 7 depicts extraction of pixel data for AFB algorithms on users touch.
present invention provides a technique for introducing
biometric system capability to allow user to place a caliper measure with his
or her hand touch over a scanned image.
The technique provides the system to allow user to draw the calipers over the scanned image. Upon user confirmation, the system applies uniform/regular caliper shape.
In the technique, measurement calipers are applied by touch and free hand drawing of a user over an image. Figure 1 depicts touch based measurement by free hand drawing of user.
Upon confirmation from user, the caliper forms regular geometric shape, such as, ellipse or circle or distance measure. Figure 2 depicts ellipse measurement calculation.
The design also covers auto draw measurement of distance and ellipse by using inputs when user applies two touch or finger points on a selected image. At this instance, the biometric system has a capability to treat one touch or finger point as start point and the other as end point to auto draw distance measurement on the scanned image. Figure 3 depicts distance measurement using two finger points at two end points for a line.
Similarly to auto draw ellipse or circle measurement, user applies three touch or finger points at a time on the screen over the selected image. Figure 4 depicts...