Running image segmenter on codepen gives different results than running image segmenter on mediapipe studio on ios chrome

[kaneishere]

Have I written custom code (as opposed to using a stock example script provided in MediaPipe)

None

OS Platform and Distribution

ios 18.3.1

Mobile device if the issue happens on mobile device

iphone 14 pro max

Browser and version if the issue happens on browser

133.0.6943.84

Programming Language and version

javascript

MediaPipe version

0.10.21

Bazel version

No response

Solution

ImageSegmenter

Android Studio, NDK, SDK versions (if issue is related to building in Android environment)

No response

Xcode & Tulsi version (if issue is related to building for iOS)

No response

Describe the actual behavior

Codepen example modified to use multiclass selfie segmenter and paint 'others' (line 158) region does not paint 'others' region when run on my ios chrome. However, the multiclass segmenter on mediapipe studio works just fine, showing me the expected 'others' region.

Describe the expected behaviour

Expect codepen example (https://codepen.io/Kane-Wu/pen/bNGNrPw) modified to use multiclass selfie segmenter (modified to show 'Others' region only) to show the same results as mediapipe studio example

Standalone code/steps you may have used to try to get what you need

https://codepen.io/Kane-Wu/pen/bNGNrPw

Other info / Complete Logs

[kaneishere]

Running on mediapipe studio (my glasses are highlighted)

Running on codepen (note that my glasses are not highlighted, the rest of the image is not painted over since I only filtered for 'others' region)

[kaneishere]

some other devices I have tested on

works
Iphone 15 pro
chrome 133.0.6943.84

doesn't work
pixel 8 pro
chrome 133.0.6943.50

[kuaashish]

Hi @kaneishere,

We are unable to determine the cause of the detection issue with the current information. Could you please share any error logs you are encountering? These logs will help us diagnose the problem.

Thank you!!

[github-actions]

This issue has been marked stale because it has no recent activity since 7 days. It will be closed if no further activity occurs. Thank you.

[kaneishere]

Hi @kaneishere,

We are unable to determine the cause of the detection issue with the current information. Could you please share any error logs you are encountering? These logs will help us diagnose the problem.

Thank you!!

These are the logs I get when I run the codepen link. No errors but I can't visualize 'Others'

LOGI0307 01:00:38.651000 1922656 segmentation_postprocessor_gl.cc:382] SOFTMAX activation function chosen on GPU, but only category mask produced, so not applying.
LOGGraph finished closing successfully.
LOGI0307 01:00:38.788000 1922656 gl_context_webgl.cc:140] Successfully destroyed WebGL context with handle 1
LOGI0307 01:00:38.802000 1922656 gl_context.cc:386] GL version: 3.0 (OpenGL ES 3.0 (WebGL 2.0)), renderer: WebKit WebGL
LOGGraph successfully started running.
LOGI0307 01:00:39.088000 1922656 segmentation_postprocessor_gl.cc:382] SOFTMAX activation function chosen on GPU, but only category mask produced, so not applying.

[kaneishere]

It's not an error per se, the problem is that I'm seeing an inconsistency in the segmentation results across devices. The call to the API still returns, but the result is incorrect