Mathis/sharp
1
0
Fork 0
mirror of https://github.com/lovell/sharp.git synced 2026-02-10 16:46:14 +01:00
Code Issues Packages Projects Releases Wiki Activity

Add experimental 'attention' crop strategy

Browse Source
This commit is contained in:
Lovell Fuller
2016-10-11 21:12:25 +01:00
parent 739178dd74
commit 18b9991fe7
21 changed files with 438 additions and 51 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
src/pipeline.cc
View File

@@ -488,13 +488,18 @@ class PipelineWorker : public Nan::AsyncWorker {
std::tie(left, top) = sharp::CalculateCrop(
image.width(), image.height(), baton->width, baton->height, baton->crop
);
} else {
} else if (baton->crop == 16) {
// Entropy-based crop
std::tie(left, top) = sharp::EntropyCrop(image, baton->width, baton->height);
std::tie(left, top) = sharp::Crop(image, baton->width, baton->height, sharp::EntropyStrategy());
} else {
// Attention-based crop
std::tie(left, top) = sharp::Crop(image, baton->width, baton->height, sharp::AttentionStrategy());
}
int width = std::min(image.width(), baton->width);
int height = std::min(image.height(), baton->height);
image = image.extract_area(left, top, width, height);
baton->cropCalcLeft = left;
baton->cropCalcTop = top;
}
}
@@ -890,6 +895,10 @@ class PipelineWorker : public Nan::AsyncWorker {
Set(info, New("width").ToLocalChecked(), New<v8::Uint32>(static_cast<uint32_t>(width)));
Set(info, New("height").ToLocalChecked(), New<v8::Uint32>(static_cast<uint32_t>(height)));
Set(info, New("channels").ToLocalChecked(), New<v8::Uint32>(static_cast<uint32_t>(baton->channels)));
if (baton->cropCalcLeft != -1 && baton->cropCalcLeft != -1) {
Set(info, New("cropCalcLeft").ToLocalChecked(), New<v8::Uint32>(static_cast<uint32_t>(baton->cropCalcLeft)));
Set(info, New("cropCalcTop").ToLocalChecked(), New<v8::Uint32>(static_cast<uint32_t>(baton->cropCalcTop)));
}
if (baton->bufferOutLength > 0) {
// Pass ownership of output data to Buffer instance