diff --git a/src/js/structures.js b/src/js/structures.js
new file mode 100644
index 0000000..5ba2b8c
--- /dev/null
+++ b/src/js/structures.js
@@ -0,0 +1,157 @@
+class Coordinate {
+  constructor(x, y) {
+    this.x = x
+    this.y = y
+  }
+
+  toRefFrame(...frameArgs) {
+    if (frameArgs.length == 0) {
+      return {x: this.x, y: this.y}
+    }
+    let outFrames = []
+    //Get Coordinates in Image Reference Frame
+    if (frameArgs[0].tagName == 'IMG' && frameArgs[0].width && frameArgs[0].height) {
+      outFrames.push({
+        x: this.x * frameArgs[0].width,
+        y: this.y * frameArgs[0].height
+      })
+    } else {
+      throw new Error('Coordinate: invalid reference frame for frameType: Image')
+    }
+    //Get Coordinates in Canvas Reference Frame
+    if (frameArgs[1]) {
+      if (frameArgs[1].tagName == 'CANVAS' && frameArgs[1].width && frameArgs[1].height) {
+        let imgWidth
+        let imgHeight
+        const imgAspect = frameArgs[0].width / frameArgs[0].height
+        const rendAspect = frameArgs[1].width / frameArgs[1].height
+        if (imgAspect >= rendAspect) {
+          imgWidth = frameArgs[1].width
+          imgHeight = frameArgs[1].width / imgAspect
+        } else {
+          imgWidth = frameArgs[1].height * imgAspect
+          imgHeight = frameArgs[1].height
+        }
+        outFrames.push({
+          x: (frameArgs[1].width - imgWidth) / 2 + this.x * imgWidth,
+          y: (frameArgs[1].height - imgHeight) / 2 + this.y * imgHeight
+        })
+      } else {
+        throw new Error('Coordinate: invalid reference frame for frameType: Canvas')
+      }
+    }
+    //Get Coordinates in Screen Reference Frame
+    if (frameArgs[2]) {
+      if (frameArgs[2].zoom && frameArgs[2].offset) {
+        outFrames.push({
+          x: outFrames[1].x * frameArgs[2].zoom + frameArgs[2].offset.x,
+          y: outFrames[1].y  * frameArgs[2].zoom + frameArgs[2].offset.y
+        })
+      } else {
+        throw new Error('Coordinate: invalid reference frame for frameType: Screen')
+      }
+    }
+
+    return outFrames
+  }
+
+  toString() {
+    return `(x: ${this.x}, y: ${this.y})`
+  }
+}
+
+export class StructureBox {
+  constructor(top, left, bottom, right) {
+    this.topLeft = new Coordinate(left, top)
+    this.bottomRight = new Coordinate(right, bottom)
+  }
+
+  getBoxes(boxType, ...frameArgs) {
+    let lowerH, lowerV, calcSide
+    switch (boxType) {
+      case 'point':
+        lowerH = 'right'
+        lowerV = 'bottom'
+        break
+      case 'side':
+        lowerH = 'width'
+        lowerV = 'height'
+        calcSide = true
+        break
+      default:
+        throw new Error(`StructureBox: invalid boxType - ${boxType}`)
+    }
+    if (frameArgs.length == 0) {
+      return {
+        left: this.topLeft.x,
+        top: this.topLeft.y,
+        [lowerH]: this.bottomRight.x - ((calcSide) ? this.topLeft.x : 0),
+        [lowerV]: this.bottomRight.y - ((calcSide) ? this.topLeft.y : 0)
+      }  
+    }
+    const tL = this.topLeft.toRefFrame(...frameArgs)
+    const bR = this.bottomRight.toRefFrame(...frameArgs)
+    let outBoxes = []
+    tL.forEach((cd, i) => {
+      outBoxes.push({
+        left: cd.x,
+        top: cd.y,
+        [lowerH]: bR[i].x - ((calcSide) ? cd.x : 0),
+        [lowerV]: bR[i].y - ((calcSide) ? cd.y : 0)
+      })
+    })
+    return outBoxes
+  }
+}
+
+export default class Structure {
+  constructor(structResult) {
+    this.label = structResult.label
+    this.confidence = structResult.confidence
+    this.box = new StructureBox(
+      structResult.top,
+      structResult.left,
+      structResult.bottom,
+      structResult.right
+    )
+    this.deleted = false
+    this.index = -1
+    this.passThreshold = true
+    this.searched = false
+  }
+
+  get resultIndex() {
+    return this.index
+  }
+
+  set resultIndex(newIdx) {
+    this.index = newIdx
+  }
+
+  get isDeleted() {
+    return this.deleted
+  }
+
+  set isDeleted(del) {
+    this.deleted = !!del
+  }
+
+  get isSearched() {
+    return this.searched
+  }
+
+  set isSearched(ser) {
+    this.searched = !!ser
+  }
+
+  get aboveThreshold() {
+    return this.passThreshold
+  }
+
+  setThreshold(level) {
+    if (typeof level != 'number') {
+      throw new Error(`Structure: invalid threshold level ${level}`)
+    }
+    this.passThreshold = this.confidence >= level
+  }
+}
diff --git a/src/pages/detect.vue b/src/pages/detect.vue
index 8939b02..e5ab0e4 100644
--- a/src/pages/detect.vue
+++ b/src/pages/detect.vue
@@ -144,6 +144,8 @@
   import touchMixin from './touch-mixin'
 
   import detectionWorker from '@/assets/detect-worker.js?worker&inline'
+  import Structure from '../js/structures'
+  import { StructureBox } from '../js/structures'
 
   const regions = ['Thorax','Abdomen/Pelvis','Limbs','Head and Neck']
   let activeRegion = 4
@@ -158,6 +160,7 @@
   let detectWorker = null
   let vidWorker = null
   let canvasMoving = false
+  let imageLocation = new StructureBox(0, 0, 1, 1)
   
   export default {
     mixins: [submitMixin, detectionMixin, cameraMixin, touchMixin],
@@ -286,14 +289,14 @@
         var filteredResults = this.resultData.detections
         if (!filteredResults) return []
 
-        var allSelect = this.detectorLabels.every( s => { return s.detect } )
-        var selectedLabels = this.detectorLabels
+        const allSelect = this.detectorLabels.every( s => { return s.detect } )
+        const selectedLabels = this.detectorLabels
             .filter( l => { return l.detect })
             .map( l => { return l.name })
         filteredResults.forEach( (d, i) => {
-          filteredResults[i].resultIndex = i
-          filteredResults[i].aboveThreshold = d.confidence >= this.detectorLevel
-          filteredResults[i].isSearched = allSelect || selectedLabels.includes(d.label)
+          d.resultIndex = i
+          d.setThreshold(this.detectorLevel)
+          d.isSearched = allSelect || selectedLabels.includes(d.label)
         })
 
         if (!filteredResults.some( s => s.resultIndex == this.selectedChip && s.aboveThreshold && s.isSearched && !s.isDeleted)) {
@@ -333,15 +336,17 @@
             self = this
             if (eDetect.data.error) {
               self.detecting = false
-              self.this.resultData = {}
+              self.resultData = {}
               loadFailure()
               f7.dialog.alert(`ALVINN structure finding error: ${eDetect.data.message}`)
             } else if (eDetect.data.success == 'detection') {
               self.detecting = false
-              self.resultData = eDetect.data.detections
-              if (self.resultData) {
-                self.resultData.detections.map(d => {d.label = self.detectorLabels[d.label].name})
-              }
+              self.resultData = {detections: []}
+              eDetect.data.detections.detections.forEach((d) => {
+                d.label = self.detectorLabels[d.label].name
+                let detectedStructure = new Structure(d)
+                self.resultData.detections.push(detectedStructure)
+              })
               self.uploadDirty = true
             } else if (eDetect.data.success == 'model') {
               reloadModel = false
@@ -476,33 +481,25 @@
           iChip = this.selectedChip
         }
         const [imCanvas, imageCtx] = this.resetView(true)
-        let structLeft = this.imageView.width * this.resultData.detections[iChip].left
-        let structTop = this.imageView.height * this.resultData.detections[iChip].top
-        let structWidth = this.imageView.width * (this.resultData.detections[iChip].right - this.resultData.detections[iChip].left)
-        let structHeight = this.imageView.height * (this.resultData.detections[iChip].bottom - this.resultData.detections[iChip].top)
+        let structBox, cvsBox, screenBox
+        [structBox, cvsBox, screenBox] = this.resultData.detections[iChip].box.getBoxes('side', this.imageView, imCanvas, {zoom: this.canvasZoom, offset: {...this.canvasOffset}})
 
-        const boxCoords = this.box2cvs(this.resultData.detections[iChip])[0]
+        this.infoLinkPos.x = Math.min(Math.max(screenBox.left, 0),imCanvas.width)
+        this.infoLinkPos.y = Math.min(Math.max(screenBox.top, 0), imCanvas.height)
 
-        let boxLeft = boxCoords.cvsLeft
-        let boxTop = boxCoords.cvsTop
-        let boxWidth = boxCoords.cvsRight - boxCoords.cvsLeft
-        let boxHeight = boxCoords.cvsBottom - boxCoords.cvsTop
-        this.infoLinkPos.x = Math.min(Math.max(boxCoords.cvsLeft * this.canvasZoom + this.canvasOffset.x, 0),imCanvas.width)
-        this.infoLinkPos.y = Math.min(Math.max(boxCoords.cvsTop * this.canvasZoom + this.canvasOffset.y, 0), imCanvas.height)
-
-        let imageScale = Math.max(this.imageView.width / imCanvas.width, this.imageView.height / imCanvas.height)
-        imageCtx.drawImage(this.imageView, structLeft, structTop, structWidth, structHeight, boxLeft, boxTop, boxWidth, boxHeight)
+        const imageScale = Math.max(this.imageView.width / imCanvas.width, this.imageView.height / imCanvas.height)
+        imageCtx.drawImage(this.imageView, structBox.left, structBox.top, structBox.width, structBox.height, cvsBox.left, cvsBox.top, cvsBox.width, cvsBox.height)
         imageCtx.save()
-        imageCtx.arc(boxLeft, boxTop, 14 / this.canvasZoom, 0, 2 * Math.PI)
+        imageCtx.arc(cvsBox.left, cvsBox.top, 14 / this.canvasZoom, 0, 2 * Math.PI)
         imageCtx.closePath()
         imageCtx.clip()
         imageCtx.drawImage(this.imageView,
-          structLeft - (14 / this.canvasZoom * imageScale),
-          structTop - (14 / this.canvasZoom * imageScale),
+          structBox.left - (14 / this.canvasZoom * imageScale),
+          structBox.top - (14 / this.canvasZoom * imageScale),
           (28 / this.canvasZoom * imageScale),
           (28 / this.canvasZoom * imageScale),
-          boxLeft - (14 / this.canvasZoom),
-          boxTop - (14 / this.canvasZoom),
+          cvsBox.left - (14 / this.canvasZoom),
+          cvsBox.top - (14 / this.canvasZoom),
           (28 / this.canvasZoom), (28 / this.canvasZoom))
         imageCtx.restore()
         this.selectedChip = iChip
@@ -532,13 +529,9 @@
         imageCtx.strokeStyle = 'yellow'
         imageCtx.lineWidth = 3 / this.canvasZoom
         if (this.imageLoaded) {
-          let imageLoc = this.box2cvs({top: 0,left: 0,right: 1,bottom: 1})
-          imCvsLocation.top = imageLoc[0].cvsTop
-          imCvsLocation.left = imageLoc[0].cvsLeft
-          imCvsLocation.width = imageLoc[0].cvsRight - imageLoc[0].cvsLeft
-          imCvsLocation.height = imageLoc[0].cvsBottom - imageLoc[0].cvsTop
+          const imageLoc = imageLocation.getBoxes('side', this.imageView, imCanvas)
           if (drawChip) {imageCtx.globalAlpha = .5}
-          imageCtx.drawImage(this.imageView, 0, 0, this.imageView.width, this.imageView.height, imCvsLocation.left, imCvsLocation.top, imCvsLocation.width, imCvsLocation.height)
+          imageCtx.drawImage(this.imageView, 0, 0, this.imageView.width, this.imageView.height, imageLoc[1].left, imageLoc[1].top, imageLoc[1].width, imageLoc[1].height)
           if (drawChip) {imageCtx.globalAlpha = 1}
         }
         this.structureZoomed = false
@@ -592,12 +585,8 @@
           imCanvas.width = imCanvas.clientWidth
           imCanvas.height = imCanvas.clientHeight
           const imageCtx = imCanvas.getContext("2d")
-          let imageLoc = this.box2cvs({top: 0,left: 0,right: 1,bottom: 1})
-          imCvsLocation.top = imageLoc[0].cvsTop
-          imCvsLocation.left = imageLoc[0].cvsLeft
-          imCvsLocation.width = imageLoc[0].cvsRight - imageLoc[0].cvsLeft
-          imCvsLocation.height = imageLoc[0].cvsBottom - imageLoc[0].cvsTop
-          imageCtx.drawImage(this.imageView, 0, 0, this.imageView.width, this.imageView.height, imCvsLocation.left, imCvsLocation.top, imCvsLocation.width, imCvsLocation.height)
+          const imageLoc = imageLocation.getBoxes('side', this.imageView, imCanvas)
+          imageCtx.drawImage(this.imageView, 0, 0, this.imageView.width, this.imageView.height, imageLoc[1].left, imageLoc[1].top, imageLoc[1].width, imageLoc[1].height)
           f7.utils.nextFrame(() => {
             this.setData()
           })
@@ -624,7 +613,12 @@
           if (li >= numBoxes) li -= numBoxes
           return li
         }
-        let boxCoords = this.box2cvs(this.showResults)
+        let boxCoords = []
+        this.resultData.detections.forEach(d => {
+          if (d.aboveThreshold && d.isSearched && !d.isDeleted) {
+            boxCoords.push(d.box.getBoxes('point',this.imageView,this.$refs.image_cvs)[1])
+          }
+        })
         const numBoxes = boxCoords.length
         let clickX = (e.offsetX - this.canvasOffset.x) / this.canvasZoom
         let clickY = (e.offsetY - this.canvasOffset.y) / this.canvasZoom
@@ -633,41 +627,13 @@
         var findBox = boxCoords.findIndex( (r, i) => { 
           let di = loopIndex(i)
           if (di == this.selectedChip ) return false
-          return r.cvsLeft <= clickX &&
-            r.cvsRight >= clickX &&
-            r.cvsTop <= clickY &&
-            r.cvsBottom >= clickY &&
-            this.resultData.detections[di].aboveThreshold &&
-            this.resultData.detections[di].isSearched &&
-            !this.resultData.detections[di].isDeleted
+          return r.left <= clickX &&
+            r.right >= clickX &&
+            r.top <= clickY &&
+            r.bottom >= clickY
         })
         this.selectChip(findBox >= 0 ? this.resultData.detections[loopIndex(findBox)].resultIndex : this.selectedChip)
       },
-      box2cvs(boxInput) {
-        if (!boxInput || boxInput.length == 0) return []
-        const boxList = boxInput.length ? boxInput : [boxInput]
-        const imCanvas = this.$refs.image_cvs
-        var imgWidth
-        var imgHeight
-        const imgAspect = this.imageView.width / this.imageView.height
-        const rendAspect = imCanvas.width / imCanvas.height
-        if (imgAspect >= rendAspect) {
-          imgWidth = imCanvas.width
-          imgHeight = imCanvas.width / imgAspect
-        } else {
-          imgWidth = imCanvas.height * imgAspect
-          imgHeight = imCanvas.height
-        }
-        const cvsCoords = boxList.map( (d, i) => {
-          return {
-            "cvsLeft": (imCanvas.width - imgWidth) / 2 + d.left * imgWidth,
-            "cvsRight": (imCanvas.width - imgWidth) / 2 + d.right * imgWidth,
-            "cvsTop": (imCanvas.height - imgHeight) / 2 + d.top * imgHeight,
-            "cvsBottom": (imCanvas.height - imgHeight) / 2 + d.bottom * imgHeight
-          }
-        })
-        return cvsCoords
-      },
       toggleSettings() {
         this.showDetectSettings = !this.showDetectSettings
         f7.utils.nextFrame(() => {
@@ -707,11 +673,11 @@
       },
       zoomToSelected() {
         const imCanvas = this.$refs.image_cvs
-        const boxCoords = this.box2cvs(this.resultData.detections[this.selectedChip])[0]
-        const boxWidth = boxCoords.cvsRight - boxCoords.cvsLeft
-        const boxHeight = boxCoords.cvsBottom - boxCoords.cvsTop
-        const boxMidX = (boxCoords.cvsRight + boxCoords.cvsLeft ) / 2
-        const boxMidY = (boxCoords.cvsBottom + boxCoords.cvsTop ) / 2
+        const boxCoords = this.resultData.detections[this.selectedChip].box.getBoxes('point', this.imageView, imCanvas)
+        const boxWidth = boxCoords[1].right - boxCoords[1].left
+        const boxHeight = boxCoords[1].bottom - boxCoords[1].top
+        const boxMidX = (boxCoords[1].right + boxCoords[1].left ) / 2
+        const boxMidY = (boxCoords[1].bottom + boxCoords[1].top ) / 2
         const zoomFactor = Math.min(imCanvas.width / boxWidth * .9, imCanvas.height / boxHeight * .9, 8)
         this.canvasZoom = zoomFactor
         this.canvasOffset.x = -(boxMidX * zoomFactor) + imCanvas.width / 2