Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Apply some optimisations in PoseNet #289

Open
wants to merge 3 commits into
base: master
Choose a base branch
from
Open

Apply some optimisations in PoseNet #289

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
f96df63
Avoid double array indexing.
valeriyvan Feb 28, 2021
e1f73ef
Avoid excessive array initialization.
valeriyvan Feb 28, 2021
dcdeb41
Use indices
valeriyvan Feb 28, 2021
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
12 changes: 8 additions & 4 deletions lite/examples/posenet/ios/PoseNet/Extensions/TFLiteExtension.swift
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -32,9 +32,13 @@ extension Data {

/// Convert a Data instance to Array representation.
func toArray<T>(type: T.Type) -> [T] where T: AdditiveArithmetic {
var array = [T](repeating: T.zero, count: self.count / MemoryLayout<T>.stride)
_ = array.withUnsafeMutableBytes { self.copyBytes(to: $0) }
return array
[T].init(unsafeUninitializedCapacity: self.count / MemoryLayout<T>.stride) {
bufPtr, initializedCount in
bufPtr.withMemoryRebound(to: UInt8.self) { reboundBufPtr in
self.withUnsafeBytes { _ = reboundBufPtr.initialize(from: $0) }
}
initializedCount = bufPtr.count
}
}
}

Expand All @@ -55,7 +59,7 @@ struct FlatArray<Element: AdditiveArithmetic> {
}

var result = 0
for i in 0..<dimensions.count {
for i in dimensions.indices {
guard dimensions[i] > index[i] else {
fatalError("Invalid index: \(index[i]) is bigger than \(dimensions[i])")
}
Expand Down
5 changes: 3 additions & 2 deletions lite/examples/posenet/ios/PoseNet/ModelDataHandler/ModelDataHandler.swift
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -214,8 +214,9 @@ class ModelDataHandler {
var maxCol = 0
for row in 0..<Model.output.height {
for col in 0..<Model.output.width {
if heats[0, row, col, keypoint] > maxValue {
maxValue = heats[0, row, col, keypoint]
let value = heats[0, row, col, keypoint]
if value > maxValue {
maxValue = value
maxRow = row
maxCol = col
}
Expand Down