From 2030e174a2eca7898bf0f162c5fae4599ef6d399 Mon Sep 17 00:00:00 2001
From: Tanishq Dubey <dubey@dws.rip>
Date: Sat, 13 Dec 2025 16:09:08 -0500
Subject: [PATCH] Remove compression, update benchmarks

---
 README.md                     | 36 ++++++++++++++++++++++++++++++-----
 main.cpp                      |  4 ++--
 test_data/current_output.tiff |  4 ++--
 3 files changed, 35 insertions(+), 9 deletions(-)

diff --git a/README.md b/README.md
index 4b4de71..3dd8052 100644
--- a/README.md
+++ b/README.md
@@ -19,12 +19,38 @@ A high-performance C++ port of [negfix8](https://github.com/chrishunt/negfix8) f
 
 ## Performance
 
-| Tool | Time | Speedup |
-|------|------|---------|
-| negfix8 (original) | 18m 8s | 1x |
-| **Chrome** | **~10s** | **~109x** |
+### Chrome vs negfix8
 
-*Benchmark: 9098×12160 16-bit TIFF (~332MB) on AMD Ryzen 9 7950X3D (32 threads, 64GB RAM)*
+| Image | Tool | Flags | Time | Speedup |
+|-------|------|-------|------|---------|
+| Large (9098×12160, 633MB) | negfix8 | — | 18m 8s | 1x |
+| Large (9098×12160, 633MB) | **Chrome** | — | **1.26s** | **~865x** |
+| Small (4272×6272, 153MB) | negfix8 | — | 22.0s | 1x |
+| Small (4272×6272, 153MB) | **Chrome** | — | **0.41s** | **~54x** |
+
+### Chrome Detailed Benchmarks
+
+#### Large Image (test_input.tiff — 9098×12160, 633MB)
+
+| Flags | Time |
+|-------|------|
+| *(baseline)* | 1.26s |
+| `-cs` | 1.38s |
+| `-sat 50` | 1.38s |
+| `-exp 1.2` | 1.39s |
+| `-cs -sat 50 -exp 1.2` | 1.45s |
+
+#### Small Image (test_input_small.tiff — 4272×6272, 153MB)
+
+| Flags | Time |
+|-------|------|
+| *(baseline)* | 0.41s |
+| `-cs` | 0.36s |
+| `-sat 50` | 0.35s |
+| `-exp 1.2` | 0.35s |
+| `-cs -sat 50 -exp 1.2` | 0.36s |
+
+*Benchmarks run on AMD Ryzen 9 7950X3D (32 threads, 64GB RAM)*
 
 ## Features
 
diff --git a/main.cpp b/main.cpp
index 536104e..8067eea 100644
--- a/main.cpp
+++ b/main.cpp
@@ -407,10 +407,10 @@ int main(int argc, char** argv) {
     std::string out = settings.outputPath.empty() ? "output.tif" : settings.outputPath;
     std::cout << "Saving to " << out << "..." << std::endl;
     
-    // Set compression params for TIFF
+    // Set compression params for TIFF - use no compression for speed
     std::vector<int> params;
     params.push_back(cv::IMWRITE_TIFF_COMPRESSION);
-    params.push_back(5); // LZW (equivalent to Zip roughly in OpenCV terms, usually 5 or 1)
+    params.push_back(1); // No compression (30x faster than LZW)
 
     cv::imwrite(out, img, params);
     std::cout << "Done." << std::endl;
diff --git a/test_data/current_output.tiff b/test_data/current_output.tiff
index 4be2995..0b27007 100644
--- a/test_data/current_output.tiff
+++ b/test_data/current_output.tiff
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:747c3f624eb891d3f8d72a9c9949cf3358ad5f779e93804e798d5b7e7438904d
-size 640825246
+oid sha256:4ebcc12410bd04a2f13e2c4dac0465fc107397c532cc672a282b2be49f09707d
+size 663863198