ARKit not working as expected, If the surface is plain, like a one-colored wall, it’s not detected - ios

Question

I am working on one application which has one functionality like user needs to show the paintings(in 2D images) on the surface with ARKit.
I have implemented it but it has some issues.
It works only for the surfaces that have distinguishable features — e.g. hanging photos, text or art. If the surface is plain, like a one-colored wall, or has only a few small features, it’s not detected. Which means that most of the walls are invisible to ARKit.
Need some solution for this. Any help would be appreciated.
{
self.node.removeFromParentNode()
node.eulerAngles.z = 0
//node.scale = SCNVector3(1.0, 1.0, 1.0)
self.viewAR.backgroundColor = UIColor.clear
self.imageView.contentMode = .scaleAspectFit
self.viewAR.frame = CGRect(x: 0.0, y: 0.0, width: 250, height: 250)
self.imageView.frame = self.viewAR.frame
self.node.geometry = SCNPlane(width: 0.05, height: 0.05)
if selectedIndexPath.row < 0 {
self.imageView.layer.borderColor = UIColor.clear.cgColor
}
else {
self.imageView.layer.borderColor = colors[selectedIndexPath.row].cgColor
}
self.imageView.layer.borderWidth = 10.0
self.viewAR.addSubview(self.imageView)
if let resWidth = self.newWork?.getSetArtWidth, let resHeight = self.newWork?.getSetArtHeight {
if resWidth > 0.0 && resHeight > 0.0 {
self.viewAR.addSubview(self.lblDimension)
self.lblDimension.backgroundColor = colors[selectedIndexPath.row]
self.lblDimension.textColor = UIColor.white
self.lblDimension.text = "Size = \(resWidth) mm * \(resHeight) mm"
}
}
if aRImageList.count != 0 {
if let imgUrl = aRImageList[imageIndex] as? String {
if let resUrl = URL(string: imgUrl){
self.imageView.sd_setImage(with: resUrl, placeholderImage: LISTING_PLACEHOLDER , completed: { (image, error, disk, imageURL) in
if error == nil {
self.imageView.image = image
if let image = image {
self.setImageSize(image)
}
self.node.geometry?.firstMaterial?.isDoubleSided = true
self.node.geometry?.firstMaterial?.diffuse.contents = self.viewAR.asImage()
}
})
} else {
self.imageView.image = LISTING_PLACEHOLDER
}
}
else if let resImage = aRImageList[imageIndex] as? UIImage {
self.imageView.image = resImage
}
//self.imageView.image = aRImageList[imageIndex]
}
node.geometry?.firstMaterial?.diffuse.contents = viewAR.asImage()//aRImageList[imageIndex]//viewToAdd
if isHorizontal == true {
//let resScale = node.scale
// let resAngle = node.eulerAngles.z
node.position = SCNVector3(hitTestResult.worldTransform.columns.3.x, hitTestResult.worldTransform.columns.3.y, hitTestResult.worldTransform.columns.3.z)
//node.scale = resScale
//node.eulerAngles.z = resAngle
node.pivot = SCNMatrix4Rotate(node.pivot, Float.pi, 0, 1, 0)
let constraint = SCNLookAtConstraint(target:sceneView.pointOfView)
constraint.isGimbalLockEnabled = true
node.constraints = [constraint]
}
else {
node.constraints = nil
node.pivot = SCNMatrix4MakeTranslation(0,0,0)
let resScale = node.scale
//let resAngle = node.eulerAngles.z
node.transform = SCNMatrix4(hitTestResult.anchor!.transform)
node.eulerAngles = SCNVector3(node.eulerAngles.x + (-Float.pi / 2), node.eulerAngles.y, node.eulerAngles.z)
node.position = SCNVector3(hitTestResult.worldTransform.columns.3.x, hitTestResult.worldTransform.columns.3.y, hitTestResult.worldTransform.columns.3.z + 0.07)
node.scale = resScale
// node.eulerAngles.z = resAngle
}
sceneView.scene.rootNode.addChildNode(node)
planeNode.removeFromParentNode()
for removeNode in self.planeNodes {
removeNode.removeFromParentNode()
}
}