Python: using function on 2 elements of different 2d numpy arrays -

-

i want sum of equivalent indexes of 2 arrays , threshold them. code runs slow , have use function often. there more efficient way in python? 

sobelx = cv2.sobel(smoothed,cv2.cv_64f,1,0,ksize=-1) sobely = cv2.sobel(smoothed,cv2.cv_64f,0,1,ksize=-1)  in range(0,height-1):     j in range(0,width-1):          xvalue= sobelx[i,j]         yvalue= sobely[i,j]         tmp = math.sqrt(math.pow(xvalue,2) + math.pow(yvalue,2))          if tmp > 255:             tmp = 255         elif tmp <0:             tmp =0          self.gradientmap[i,j] = tmp

this should trick:

sobelx = cv2.sobel(smoothed,cv2.cv_64f,1,0,ksize=-1) sobely = cv2.sobel(smoothed,cv2.cv_64f,0,1,ksize=-1)  self.gradientmap = numpy.sqrt (sobelx ** 2 + sobely ** 2) self.gradientmap[self.gradientmap> 255] = 255

i don't know exact type of sobelx , sobely assumed there 2 numpy.array questions.

note: removed tmp < 0 case because never have negative square root.


Comments

Post a Comment

Popular posts from this blog

qt - Using float or double for own QML classes -

-
i've created components , helper methods using c++ , qt used in qml gui. of methods calculate gui elements (size, transformations, scene graph items creation). target arm 32 bit using opengl / eglfs render output. opengl using float , qml using real (defined double ). what should use in c++ do not lose precision? if use qreal ( double ) shouldn't lose precision. if git grep float in qtbase.git , can find out bit more: dist/changes-5.2.0-**************************************************************************** dist/changes-5.2.0-* important behavior changes * dist/changes-5.2.0-**************************************************************************** dist/changes-5.2.0- dist/changes-5.2.0- - qt compiled qreal typedef'ed double on dist/changes-5.2.0: platforms. qreal float on arm chipsets before. guarantees more dist/changes-5.2.0- consistent behavior between platforms qt supports, binary dist/chan...
Read more

Create Outlook appointment via C# .Net -

-
i need create outlook appointment using microsoft.office.interop.outlook , while can work locally on own workstation , works if run web application via server's browser, not work when connect server externally. hence, think might permission issue. i changed application pool identity " localsystem " don't access denied error. unfortunately, doesn't work. the app behaves if appointment created, appointment doesn't appear in outlook. here include file on top of aspx.cs page using outlook = microsoft.office.interop.outlook; here code using pop appointment. outlook.application apptapp = new outlook.application(); outlook.appointmentitem appt = apptapp.createitem(outlook.olitemtype.olappointmentitem) outlook.appointmentitem; appt.subject = txtfirstname.text + " " + txtlastname.text; appt.body = txtcomment.text; appt.alldayevent = false; appt.start = datetime.parse(txtreminderdate.text + " 8:00 am"); appt.end = datetime.p...
Read more

ios - Swift Array Resetting Itself -

-
i have 2 arrays: pointhistory , datehistory . have nstimer , , when timer runs out, action called. in action appending int pointhistory , , current date string datehistory . here timer action: func timeraction() { let steppervalue = int(stepper.value) employee.numberofpoints = steppervalue networking.saveemployee(employee, completion: { (error) -> void in if error != nil { let alert = uialertcontroller(title: "error", message: "there error updating \(self.employee.name)'s points", preferredstyle: .alert) let alertaction = uialertaction(title: "ok", style: .cancel, handler: nil) alert.addaction(alertaction) self.presentviewcontroller(alert, animated: true, completion: nil) } }) var dateformatter = nsdateformatter() dateformatter.dateformat = "mm-dd-yyyy" dateformatter.timezone = nstimezone.localtimezone() var date = nsdate() var ...
Read more