AngularJS filter JSON object {} that is not an array of objects

I am trying to apply a filter to a JSON object without much luck.

The data structure is something like this:

$scope.jsonObj = {
    someid8979: {
        name: "Bill",
        age: 18
    },
    someid987: {
        name: "Ted",
        age: 17
    }
}

In my HTML, something like this:

<input ng-model="search">
<div ng-repeat="(key,val) in jsonObj | filter:search">
    {{key}} - {{val.name}} - {{val.age}}
</div>

In the past, I have always sent out the data as an array of objects, and indeed, if I did that here it would work, but due to the nature of the app, this isn't possible as I need to refer to properties on the object by name (the id) elsewhere in the code.

Is there any way to apply a filter to a JSON object similar to this?

I could create a separate array just for filtering purposes and target the JSON object for my other actions, but I'd rather not :)

Edit: I made a duplicate of the object as array and looped over that, which allows filtering. This solves my problem, but not in the way I had hoped. Could be good enough.