Mixing
Firebase MLKit Android from an external camera
I believe I found a bug in the Firebase MLKit for Android, but perhaps other people have some insight into it.
I am currently streaming video from a drone to my Android device. It is being decoded to YUV420-888 with MediaCodecand written to an InputReader surface. When I pass the Image received in the InputReader callback to MLKit using fromMediaImage, there are no errors but it fails to detect anything in the image. If I convert the Image to a Bitmap using PixelCopy and then pass that into MLKit with fromBitmap, it then succeeds at detecting features in the image.
I think the problem may be that the video is not originating from the phone's camera, but rather from an external camera on the drone (therefore not using Camera2 APIs). I know my video feed is working in general because it can be previewed on a SurfaceView and because it works after being turned into a Bitmap. This leads me to believe that the MLKit parsing of YUV420-888 data must be incorrect and that is what leads to the issue.
Anyone have any insight?
android mediacodec yuv firebase-mlkit asked Jan 2 at 4:24
hellowill89hellowill89
5491620
add a comment |
I believe I found a bug in the Firebase MLKit for Android, but perhaps other people have some insight into it.
I am currently streaming video from a drone to my Android device. It is being decoded to YUV420-888 with MediaCodecand written to an InputReader surface. When I pass the Image received in the InputReader callback to MLKit using fromMediaImage, there are no errors but it fails to detect anything in the image. If I convert the Image to a Bitmap using PixelCopy and then pass that into MLKit with fromBitmap, it then succeeds at detecting features in the image.
I think the problem may be that the video is not originating from the phone's camera, but rather from an external camera on the drone (therefore not using Camera2 APIs). I know my video feed is working in general because it can be previewed on a SurfaceView and because it works after being turned into a Bitmap. This leads me to believe that the MLKit parsing of YUV420-888 data must be incorrect and that is what leads to the issue.
Anyone have any insight?
android mediacodec yuv firebase-mlkit asked Jan 2 at 4:24
hellowill89hellowill89
5491620
add a comment |
I believe I found a bug in the Firebase MLKit for Android, but perhaps other people have some insight into it.
I am currently streaming video from a drone to my Android device. It is being decoded to YUV420-888 with MediaCodecand written to an InputReader surface. When I pass the Image received in the InputReader callback to MLKit using fromMediaImage, there are no errors but it fails to detect anything in the image. If I convert the Image to a Bitmap using PixelCopy and then pass that into MLKit with fromBitmap, it then succeeds at detecting features in the image.
I think the problem may be that the video is not originating from the phone's camera, but rather from an external camera on the drone (therefore not using Camera2 APIs). I know my video feed is working in general because it can be previewed on a SurfaceView and because it works after being turned into a Bitmap. This leads me to believe that the MLKit parsing of YUV420-888 data must be incorrect and that is what leads to the issue.
Anyone have any insight?
android mediacodec yuv firebase-mlkit asked Jan 2 at 4:24
hellowill89hellowill89
5491620
I believe I found a bug in the Firebase MLKit for Android, but perhaps other people have some insight into it.
I am currently streaming video from a drone to my Android device. It is being decoded to YUV420-888 with MediaCodecand written to an InputReader surface. When I pass the Image received in the InputReader callback to MLKit using fromMediaImage, there are no errors but it fails to detect anything in the image. If I convert the Image to a Bitmap using PixelCopy and then pass that into MLKit with fromBitmap, it then succeeds at detecting features in the image.
I think the problem may be that the video is not originating from the phone's camera, but rather from an external camera on the drone (therefore not using Camera2 APIs). I know my video feed is working in general because it can be previewed on a SurfaceView and because it works after being turned into a Bitmap. This leads me to believe that the MLKit parsing of YUV420-888 data must be incorrect and that is what leads to the issue.
Anyone have any insight?
android mediacodec yuv firebase-mlkit android mediacodec yuv firebase-mlkit asked Jan 2 at 4:24
hellowill89hellowill89
5491620
asked Jan 2 at 4:24
hellowill89hellowill89
5491620
asked Jan 2 at 4:24
hellowill89hellowill89
5491620
asked Jan 2 at 4:24
hellowill89hellowill89
5491620
asked Jan 2 at 4:24
hellowill89hellowill89
5491620
5491620
add a comment |
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f54001184%2ffirebase-mlkit-android-from-an-external-camera%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f54001184%2ffirebase-mlkit-android-from-an-external-camera%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
